Lionel Messi has proven with his recent form that he is committed to Barcelona despite significant uncertainty surrounding his future and links to Tuesday's Champions League opponents Paris Saint-Germain, according to Jordi Alba.

Messi rocked world football in pre-season when declaring his desire to leave Barcelona after spending his entire professional career at Camp Nou.

The Argentina international had grown disillusioned with the state of the club under previous president Josep Maria Bartomeu, whom Messi subsequently accused of reneging on an agreement to let him leave on a free transfer.

Messi ultimately decided to stay put, uncomfortable with the idea of dragging Barca through the courts, leaving the possibility for him to depart at the end of his contract in 2021.

While Barca have made no secret of their desire to renew his deal, a situation that is dominating the lead-up to next month's presidential election, PSG are apparently eager to bring Messi to France and even some of their players have openly addressed the prospect.

With PSG up next on Tuesday, attentions understandably turned to Messi's future in the pre-match news conference, and Alba insisted his illustrious team-mate had shown his professionalism with his haul of nine goals in as many games.

"The decision he makes will be well thought out and well-considered," Alba said. "I have said many times that I am a better player on the field when he is on the field.

"It is his decision and it will have to be respected whatever he makes, but now his thoughts are at Barca and you see that in every game.

"Even if he had decided, he wouldn't say whether he is going to stay. He already said before what intention he had.

"Today he is 100 per cent committed. From here, hopefully we can win a title and let him decide at the end of the season.

"What other players or other clubs say, we do not pay attention to in the dressing room. Leo will have the last word."

Ronald Koeman, who addressed the media after Alba, was a little less willing to discuss Messi, yet he reiterated he is optimistic Barca's captain will remain with them after the end of the 2020-21 campaign.

"I don't know if it was the intention from [the media] to talk a lot about Messi, my idea is to prepare the team and the players for an important game," he said.

"Messi is a Barca player and I have high hopes that he will continue to be a Barca player."

Barcelona coach Ronald Koeman does not believe Sevilla's 2-0 Copa del Rey semi-final first-leg win over the Blaugrana was a fair reflection of the match, while he also questioned the officials.

Jules Kounde opened the scoring in the first half with a fine individual effort, before former Barca midfielder Ivan Rakitic wrapped up a potentially significant win in the latter stages.

Lionel Messi did go close several times for the visitors, with Sevilla goalkeeper Yassine Bounou keeping him at bay as he made four saves in total – the Moroccan has saved all 18 shots on target he has had to face in this season's Copa.

The two teams renew hostilities at Camp Nou on March 3 for the second half, though Barca have only progressed past Sevilla once in the Copa when losing the first leg to the Andalusians.

Barca shaded the possession (53.6 per cent) and their 13 shots were two more than the hosts, with Koeman left convinced his side had been hard done by.

"It is a result with too much reward for them," Koeman said. "We have seen a Barca playing well, creating a very clear chances.

"We have put a lot of pressure in the second half. I cannot blame the team. There is another game left, we have to try to win and play the final.

"It is difficult at 2-0. We had opportunities to score, but their defence was good, as was their goalkeeper too, but at home this Barca is capable of anything."

Barca were left frustrated by a moment in the second half where Suso was adjudged to have fouled Jordi Alba just outside the box, yet Koeman and his players were convinced the offence occurred inside the box.

The VAR did not appear to intervene, and this left Koeman bemused.

"Mateu Lahoz [the referee] I think was good in general," Koeman said.

"Of course, there was always doubt with the incident of the penalty, because everyone says it was a penalty, so I have to believe them – not only the Barca people [said it should have been a penalty].

"I don't know why the VAR has not intervened."

Sevilla go into the second leg with a significant advantage and know that an away goal will give Barca a mountain to climb, but they are not getting ahead of themselves, aware the most difficult task is yet to come.

"We knew it was going to be very difficult, the team played a great game, we fought to the end and that is worth it, football gives back to you in this way," Rakitic said.

"But we have half the work left to do in Barcelona."

Coach Julen Lopetegui echoed that sentiment, adding: "The team played a great game against a Barcelona that arrived in good form.

"We played well, we defended well and it was a very beautiful game. Now, we have the most complicated and most difficult thing left, which is to play at the Camp Nou. We are aware of the challenge."

Ronald Koeman has hit back at Rudi Garcia after the Lyon head coach accused his Barcelona counterpart of being a hypocrite.

Barca boss Koeman last week admitted to being unhappy with "disrespectful" Paris Saint-Germain after a number of their players and staff members discussed transfer links with Lionel Messi.

However, speaking to beIN SPORTS at the weekend, Garcia pointed out that Koeman publicly stated earlier this season that he wants to bring Memphis Depay to Camp Nou once his Lyon contract expires at the end of the season.

"I read that Koeman was a bit offended that PSG talked about Leo Messi before the Champions League match between PSG and Barcelona," Garcia said. 

"He was not shy about talking about Memphis Depay even after the transfer market. It is called the water sprinkler and the sprinkler has been sprinkled."

Koeman, who is preparing his side for Wednesday's Copa del Rey semi-final first leg with Sevilla, responded to Garcia's comments at a news conference on Tuesday.

"The Lyon coach likes to speak to the press a lot. For me he is not an important man," the former Netherlands boss said.

"For me I just have to prepare for the next games and then we will see."

Messi is into the final four months of his Barcelona contract and has been strongly linked with a high-profile switch to PSG at the end of the season.

Speculation over Messi's future rumbles on, as does the discussion over whether the six-time Ballon d'Or winner can be considered the greatest sportsman of all time.

The debate reopened on Sunday after Tom Brady won his seventh NFL championship ring by helping the Tampa Bay Buccaneers to victory over the Kansas City Chiefs.

Asked where Messi ranks on the list of the world's all-time great athletes, Koeman said: "It is always difficult because there are different periods to consider.

"But what Messi has done is something incredible - the number of goals and titles with Barca. I did not see the Super Bowl but Messi is the best in the world at what he does.

"It is difficult to compare him with [Johan] Cruyff and Pele, but what I have seen of Messi is something special."

Messi is expected to return to Koeman's starting line-up for the trip to the Estadio Ramon Sanchez Pizjuan, with Barcelona aiming to extend their six-game winning run in all competitions.

Koeman has a tough selection call to make at the other end of the field, however, as Ronald Araujo has joined fellow centre-back Gerard Pique and right-back Sergino Dest on the sidelines.

Frenkie de Jong filled in alongside Clement Lenglet after Araujo limped off in the 3-2 win over Real Betis, but Koeman is still undecided on who will start at the back against Sevilla.

"It is true that if we put Frenkie as a centre-back then we are missing something in the centre of the pitch," he said. 

"If we can choose a recognised centre-back, it is better to play with him there. Without Frenkie in the middle, we lose something."

Oscar Mingueza can potentially shift into the middle, though that leaves a gap at right-back, while Samuel Umtiti is also in the squad but has struggled for fitness.

"Oscar is with us and he has improved a lot," Koeman said. "He has taken the opportunity to be with us. He knows how to play in different positions and has grown thanks to the help of his team-mates. 

"I have no fear of putting a young man into the side. He has taken the opportunity with both hands. You must improve when you have to press. He has room for improvement, but he is doing things very well.

"As for Samuel, physically he is fine at the moment. He's on the squad list and we have the option to play him. If not, we would not name him in the squad. 

"With his history, we are always aware of his physical condition. We are still thinking about his condition but in the many games he has played he has shown his quality."

Barca are in good form but Sevilla are on an even better run, winning each of their last seven matches in all competitions ahead of Wednesday's first leg.

"They have a good team, are very organised and have good individual quality," Koeman said. "That is why they are up there.

"We will have to be good with the ball because they are going to put pressure on us. But if we are at our top level, we can hurt even a team like Sevilla."

Barcelona head coach Ronald Koeman praised the game-changing impact of Lionel Messi, who came off the bench to inspire a 3-2 LaLiga victory over Real Betis.

Messi was a shining light for Barcelona after being named among the substitutes, scoring an equaliser before unlocking Betis' defence with a sublime pass on Sunday.

The six-time Ballon d'Or winner scored just 136 seconds following his introduction – his fastest goal as a substitute for Barca in LaLiga.

Trincao struck the 87th-minute winner for Barca, who are seven points adrift of leaders Atletico Madrid, though the latter have two games in hand.

Koeman saluted superstar captain Messi post-match, telling reporters: "I always talk to the players and I express to them my ideas.

"I spoke to Lionel Messi yesterday about whether he was happy with having a rest and that if we needed him during the game, I was going to bring him on.

"That's what ended up happening. We were losing 1-0 and just a few minutes after coming on to the pitch he completely changed the game.

"He scored the equaliser and then added a lot to our play in the second half."

Messi – tipped to leave Barca amid strong links to Paris Saint-Germain and Manchester City – has scored six goals in his past seven LaLiga games playing from the bench.

Koeman's Barcelona have won their past nine games away from home in all competitions – the third best streak ever for the Spanish giants after 13 in 2008-09 under Pep Guardiola and 10 in 2014-15 under Luis Enrique. Barcelona claimed LaLiga, Copa del Rey and the Champions League in those seasons.

Ronald Koeman was delighted with the character shown in Barcelona's victory over Real Betis but recognises his team must continue to prove their winning mentality.

Barca made it six away wins on the bounce in LaLiga as Trincao's late strike secured a 3-2 victory over Betis on Sunday.

Borja Iglesias' first-half tap-in put Betis ahead, but Lionel Messi scored 136 seconds after his introduction from the bench – his fastest goal as a Barca substitute – to restore parity before Victor Ruiz turned into his own net.

Ruiz atoned with a fine header to make it 2-2, yet Trincao, another visiting sub, had the final say to lift Barca back into second place in LaLiga.

"We must highlight the mentality of the team; in a tough game we have won for quality and for having an important character," Koeman told reporters.

"For me, the first half was not very good. We needed more to open up Betis when we had the ball. When we lost balls, we reacted late. I have not seen a team with much spark in the first half.

"The Copa del Rey [which Barca played in on Wednesday] is a trophy where we are in the semi-finals. It is the shortest way to win something.

"It is important, but we are Barca. You have to show mentality in any game in any competition."

Trincao's strike, which took a slight deflection on its way into the top corner, was the 21-year-old's first LaLiga goal.

However, the winger insisted the most important factor for him was helping Barca to secure the points.

"I didn't need to score, just do my job. You have to help. I'm very happy for the team and the victory," said Trincao, who became the fifth Portuguese player to score for Barca since the turn of the century, after Deco (13 goals), Andre Gomes (three), Nelson Semedo (two) and Ricardo Quaresma (one).

"We changed our attitude in the second half. It was the most important thing for the victory. We want to win everything and we are going to do everything possible to win.

"The spirit of my team-mates helps me a lot. They have all congratulated me for the goal."

Barca have now won their past nine away games in all competitions, the third-best streak ever for the club after 13 in 2008-09 and 10 in the 2014-15 campaign.

They sit seven points adrift of leaders Atletico Madrid, although the gap will be back at 10 points should Diego Simeone's team overcome Celta Vigo on Monday.

Ronald Koeman does not agree with Gerard Pique's claim that referees favour Real Madrid over other LaLiga sides.

Pique this week quoted a former referee who, according to the Barcelona defender, said 85 per cent of officials in Spain's top flight were from Madrid.

In an interview with Post United, Pique said: "How are they not going to whistle in favour of Real Madrid? Even unconsciously, how are they not going to give more for one side than the other?"

Pique added last season, when Madrid won the title, was "the most absurd refereeing experience ever".

En route to the championship in 2019-20, Zinedine Zidane's side earned a joint-high 11 penalties and conceded a joint-low two.

But Koeman disagrees with his centre-back, who reportedly could be sanctioned for his comments, insisting the league's referees are honest.

"Those are [Pique's] words. I can only comment on this year, not on previous seasons," Koeman told reporters.

"There are decisions in which we have had no luck, but I don't think they are against us. They are decisions of the referee and also VAR.

"I always think that the attitudes of the referees are honest. They give what they see and are not in favour of any team."

The numbers have changed this term as Madrid have received a joint-low 37 cards (36 yellow, one red) but only Cadiz (none) and Huesca (one) have won fewer than their two penalties.

The defending champions have also conceded a joint-high seven spot-kicks heading into this weekend.

Barca have been shown 38 cards, won five penalties and given away two.

Koeman was speaking ahead of Sunday's trip to Real Betis, which follows hot on the heels of Barca playing 120 minutes against Granada in the Copa del Rey on Wednesday.

Victory after extra time in that match set up a double-header with Sevilla in the semi-finals, adding to an already packed schedule.

Koeman feels the calendar is "killing the players" and pleaded for help from competition organisers.

"It is difficult," he said. "The number of games that the big teams have, with three competitions, on top of the COVID situation, makes everything more difficult.

"You have to talk with the players to see how they are physically, their feelings. Sometimes you have to give someone a rest to be able to have everyone in the best condition.

"If we count tomorrow's game and Wednesday's, there are 12 games in a row, of which 11 are away from home. And that's playing at 21:00, coming home at 03:00 in the morning. It is difficult for the players to be able to play all the time. We need help.

"I hope that one day UEFA or LaLiga will think about the number of games and what this does to the players. It is not normal. The games we've had to play, the trips, the schedules, playing the Supercopa between four teams, in my opinion, is a lot.

"Each coach has his opinion about the fixture schedule that the players have to go through. I think this has to stop, it's killing the players. We will have many injuries as a result of this. It is impossible.

"Hopefully one day they will make a decision to help the players with their fitness."

Ronald Koeman has reiterated his desire for Lionel Messi to stay at Barcelona, although he once again acknowledged it is the player who will make the final decision.

Messi wanted to leave Barca last year but stayed on to see out the final year of his contract, details of which were recently leaked to the Spanish press.

The revelation of Messi's earnings – potentially worth in excess of €555million over the course of four years – came as Barca's debts reportedly rose above €1.1billion, with the coronavirus pandemic dealing a huge blow to the club's finances.

Despite the speculation surrounding his future, Messi has continued to perform for Barca, scoring 16 goals across all competitions this season.

He missed two games due to suspension in January but returned to score against Rayo Vallecano in the Copa del Rey, followed by the opener in Barca's most recent LaLiga match, a 2-1 win over Athletic Bilbao.

Koeman said in midweek that he still hoped Messi would eventually choose to remain at Barca and extend his contract, though the coach conceded he was not confident of that happening.

Speaking ahead of Sunday's game with Real Betis, the former Netherlands boss again stressed Messi's future is in his own hands.

"I said the other day: I think there's one person that can decide his future and that is Leo Messi himself," Koeman told a news conference.

"Us as a club and me as a manager, of course, I would like that he stays here for many more years and we can try to make him feel good, make sure he's happy, because if he's happy, like he is this season, he gives us a lot of quality, which we need.

"He is a player with incredible talent and, on top of that, I think his morale is also very high at the moment; he's got good energy and he helps us a lot. The future is in his hands."

Messi has created 14 goalscoring chances following a ball carry (moving with the ball five or more metres) in LaLiga this season – more than any other player – although he has failed to assist in this way. 

The 33-year-old has an exceptional record against Betis, having had a direct hand in 31 goals in 21 LaLiga appearances against the Andalusian club, scoring 21 times and providing 10 assists, while he has either scored or assisted on each of his past five league visits to Benito Villamarin.

Messi is still the main man at Barca, but Antoine Griezmann has finally rediscovered the form which earned him his big-money move from Atletico Madrid.

Griezmann scored twice and set up two more as Barca laboured to a 5-3 extra-time victory over Granada in the Copa del Rey on Wednesday, a result which Koeman celebrated passionately on the touchline.

"I remember that I called him when I signed for Barcelona," Koeman said of Griezmann, who ranks fifth in the Blaugrana squad for league chances created this season (21) but leads the way on assists (four), while his goal tally of six is bettered only by Messi (12).

"I told him that I had a lot of confidence in him. I told him that he should know that he is important.

"Although he started without effectiveness, he has recovered. I have never doubted him. Besides, he is also his own critic.

"You can't ask for more from Griezmann, he's very important to us.

"I can't deny that the other day I was very happy after the game. I don't know for how long. Today it's sunny and tomorrow it may rain.

"I really liked the game the other day, but tomorrow is another game. We have to prove ourselves yet again that we are on the right track."

Barcelona were handed a tough draw against Sevilla in the Copa del Rey semi-finals as Ronald Koeman chases his first trophy since being appointed head coach.

The two-leg tie will be a repeat of the teams' memorable meeting at the quarter-final stage two years ago, when Sevilla won 2-0 at home before being thrashed 6-1 at Camp Nou.

Koeman, who took charge last August, saw his side beaten 3-2 in the Supercopa de Espana final by Athletic Bilbao in January, when Lionel Messi was sent off in extra time.

That silverware slipped by but the Dutch coach will hope for a better outcome for Barcelona as the Copa del Rey enters its final stages.

They were almost knocked out in the quarter-finals this week by Granada, saved by late goals in normal time from Antoine Griezmann and Jordi Alba before winning 5-3 after extra time.

Facing Sevilla will surely be no easy task given Barca, second in LaLiga, are just a point ahead of Julen Lopetegui's team.

There could be another final between Barcelona and Athletic in store, with the Bilbao giants drawn to face Levante in the other semi-final.

The first legs of each tie will be played next midweek, with the return games to be played on the first midweek in March, with exact dates for each match to be determined.

Sevilla will have extra incentive to reach the final, given that match will be staged in their home city on April 17, at Estadio La Cartuja.

Because of the coronavirus impact on Spanish football, last season's Copa del Rey final has yet to be played, with that game between Athletic and Real Sociedad to be played at the same Seville stadium on April 3.

Barcelona hold the record for the most Copa del Rey titles, having won the competition 30 times, with Athletic next on the list with 23 victories.

Ronald Koeman hit out at Paris Saint-Germain, accusing the Ligue 1 giants of being "disrespectful" for continuing to talk about Barcelona star Lionel Messi.

Messi, 33, has been heavily linked with a move to PSG when his contract expires at the end of the season.

Angel Di Maria became the latest person connected to PSG to discuss Messi, with coach Mauricio Pochettino, sporting director Leonardo and Neymar having also spoken about the Argentina star in recent months.

After opening the scoring in Wednesday's 3-0 win over Nimes, Di Maria – who is also out of contract at season's end – talked up a potential PSG move for his compatriot.

"I hope to renew with PSG. Play with Messi? Yes, hopefully, I think there are many possibilities," he said.

"I have to be calm, think about my own thing and continue in Paris because I am very happy here."

Barcelona coach Koeman is growing tired of the Ligue 1 giants speaking about his star.

After a stunning comeback to get past Granada in the Copa del Rey quarter-finals, Koeman hit out at PSG, who face Barca in the Champions League last 16 beginning this month.

"It is disrespectful that so many people from PSG talk about Messi. They are spicing up the [Champions League] game," he said.

"He is still a Barca player."

Barcelona took a "giant step" towards a successful season with a thrilling comeback win over Granada, Ronald Koeman said.

The Catalans claimed a remarkable 5-3 Copa del Rey quarter-final win on Wednesday after forcing extra time at Estadio Nuevo Los Carmenes.

Barca were trailing 2-0 as late as the 87th minute only for Antoine Griezmann and Jordi Alba to force the additional period, after Francisco Trincao, Lionel Messi and Ousmane Dembele had all hit the woodwork.

Griezmann made it 3-2 only for a Fede Vico penalty to level matters again, but Frenkie de Jong scored from a rebound and Alba smashed home a stunning volley to secure Barca's semi-final spot.

Koeman last week suggested his side were not ready to compete for the biggest trophies and the Barca boss remains unconvinced they could end 2020-21 winning LaLiga, the Copa and the Champions League.

However, he believes their fightback against Diego Martinez's side could perhaps be a turning point in their campaign.

He said: "I was referring to winning the three trophies: LaLiga, the Champions League and the Copa. I don't believe [we can win all three]. But I've always believed in the team. We've improved many things, above all in character. We've taken a giant step forward.

"It helps to have spirit and strength in the team. That's the way. We've worked a lot to get to the moment when the team starts to believe and it's a proud feeling. And it's come at an important moment of the season.

"We started the game really strongly, we played really well in the first 20 minutes. A mistake in playing where we shouldn't be playing cost us a goal.

"You have to highlight the team's mentality because we never gave up. We had really bad luck with the woodwork. We did everything to win the game.

"We deserved it due to the mentality of the team, but on this occasion, we showed we know how to suffer. We knew how to defend the result and we deserved the win."

Griezmann proved pivotal to the result, scoring Barca's first before setting up Alba's equaliser with a cushioned header from a Messi cross.

The France star then converted an emphatic header of his own and teed up Alba's spectacular second with a clever outside-of-the-foot pass.

It was the first time the €120million man had been directly involved in four goals in the same game for the Catalans.

"I'm really pleased with Griezmann," said Koeman. "I know it's really important for him. The team needs him. With his effectiveness, we're more dangerous."

Antoine Griezmann being a Barcelona success is important to head coach Ronald Koeman.

Barca are preparing to face Granada in an away Copa del Rey quarter-final on Wednesday.

They are favourites to win the competition after Atletico Madrid and Real Madrid crashed out against lower-league opposition.

Griezmann scored twice and set up another as Barca won 4-0 at Los Carmenes in LaLiga last month.

Ahead of their latest meeting in the cup, Koeman praised the World Cup winner for his turnaround in form, which was partly sparked by that outing.

He has five goals in his last seven games, including the winner in Sunday's 2-1 home win over Athletic Bilbao.

"All season Antoine is working well," Koeman said at his pre-match news conference.

"[He has done] what a player has to do, which is help the team to the maximum. 

"With Antoine there have been moments when he has been scoring and those when he hasn't scored, but they are phases that any footballer goes through, we have all experienced it. 

"Now he is very good and that is important to me. We want to get the most out of each player in the squad."

Griezmann has seven goal involvements in his last six games at Los Carmenes and, prior to his star showing in the last meeting, had netted just three times in his first 16 LaLiga appearances this season.

Barca have five straight away wins in LaLiga, four of which have come with clean sheets. It is their best run under Koeman, who hopes they can carry that form into the cup.

"It is a different game because it is the cup and they are always different games from the championship," said the Dutchman.

"Also I think that both they [Granada] and we have played many games – they have had even more. 

"Do not forget that at the start of the other game we had quite a few complications in playing our game. We expect a difficult game in which we have to be very focused."

Koeman would not go as far as saying the Copa del Rey was now his top priority over LaLiga.

But he concedes it is the most likely route to domestic silverware with Atletico Madrid sitting 10 points clear with a game in hand atop the table.

Koeman added: "The cup is not more important than the league, but it is true that it is closer [to being won] because there are fewer games left. 

"It is not normal for Atletico Madrid to get so many points, they are very strong. In the league we can only wait for them to fail. We have lost many points at home that cannot be dropped.

"I don't give more importance to Wednesdays game than to the weekend [against Real Betis], but we want to keep winning and get through this tie to be in the semi-final. 

"Squad rotation depends on the physical condition of the players. It is a vital match, but if there is a player who is not physically well, he will not play."

Ronald Koeman believes it is "absurd" that a report over Lionel Messi's contract is still dominating headlines but has been delighted with the way his captain has responded.

The build-up to Barcelona's Copa del Rey quarter-final at Granada has been overshadowed by an apparent leak of Messi's deal at Camp Nou, which was signed in 2017.

A report by El Mundo on Sunday claimed the contract, which expires at the end of this season, is worth more than €555million.

It was already believed that Messi was on an extraordinary salary at Barcelona, given he is recognised by many as the greatest active player of the world's most popular sport.

But the leaking of the exact sums payable to Messi has caused a stir, coming at a time when the embattled LaLiga giants are in financial trouble.

Koeman has previously rejected any suggestion that Messi's contract was connected to Barcelona facing a financial hurdle.

He was unhappy that it remained the central story prior to Wednesday's last-eight tie, with Barca favourites to win the cup due to Atletico Madrid and Real Madrid already being eliminated.

"It is something absurd that you [the media] have been on with this issue for three or four days," Koeman said at his pre-match news conference.

"The team and Leo have responded in the way that I like, which is to try to leave the things from the press aside and concentrate on the game.

"I am happy with the team and how he [Messi] is currently working."

Koeman has previously said anyone inside Barca who is found to have leaked sensitive details would be fired.

But he reiterated his comments made after Sunday's 2-1 home win over Athletic Bilbao – where Messi scored his 650th club goal – that the leak could well have come from outside.

Koeman added: "It can come from many places, because there is always competition between the big clubs and there are people from outside with friends inside.

"As a coach I defend the players and the club. Leaks like these are not good and have bad intentions.

"When things come out it is important to be more united in the dressing room."

Barcelona boss Ronald Koeman remains hopeful Lionel Messi will opt to stay at Camp Nou, but is "not confident" about that outcome.

Messi is out of contract at the end of the season and has been heavily linked with Manchester City and Paris Saint-Germain.

The 33-year-old wanted to leave last season after the club finished without a trophy and he fell out with then-president Josep Maria Bartomeu.

Messi agreed to stay for the last year of his contract when Barca refused his request and has impressed under Koeman, scoring nine goals in his last 10 games.

But Koeman is not convinced a happier Messi this season will result in him remaining with the club for the long term.

"I'm not confident about that," Koeman said to The Athletic.

"I'm hopeful, yes, about this because he's still a great player and he's still winning matches for us, for the team. 

"I'm enjoying being his coach, if you look at his qualities every day in the training sessions, it's incredible. 

"Of course, he came as a young kid to Barcelona. And I still don't see Leo Messi in another shirt other than the Barca shirt."

Messi reached 650 Barca goals in Sunday's 2-1 home win over Athletic Bilbao.

After the match, Koeman said Barcelona "can't aspire to much" without Messi as he reflected on a leak by El Mundo which claimed the deal his captain signed in 2017 is worth more than €555million.

Koeman was thrilled to get the Barcelona job ahead of 2020-21 but reflected on how tough it had been to immediately handle the Messi saga, which was already under way and has raged on since.

"It was a difficult time because he's still the best player, but he was angry about some situations in the club," added Koeman. 

"And he was not happy that he was in a team who lost 8-2 against Bayern Munich in the quarter-final of the Champions League. 

"Of course, he was angry, he had to leave, he wanted to leave the team.

"First of all, what I said to the club was, 'OK, it's not my problem. It's a problem between the club and Leo Messi. And you have to resolve that'. 

"Finally, the club said, 'We don’t make a transfer for him. He needs to stay'. It was a difficult time for Leo but he finally accepted it."

Koeman has not had any issues with Messi's attitude.

The former Netherlands head coach added: "I spoke to him in his house before we started the season and I made plans with him and he was really enthusiastic.

"I knew that he had some problems with the club and I was out of that.

"I said to Leo, 'I'm really happy if you stay. If you don't stay, it's your decision and it's what you have to handle with the club. If you stay, you will be part of the team and this will be your position to get all the best out of yourself'. 

"Little by little, he accepted that situation. And look how he is playing in the last few weeks, he is really involved in the club, in the team. 

"But nobody knows what will happen in the future."

Lionel Messi did not deserve his contract to be leaked to a newspaper, said Ronald Koeman, as the Barcelona head coach claimed there was an agenda to "hurt" the Argentine superstar.

A report by El Mundo claimed the deal Messi signed at Camp Nou in 2017, which expires at the end of this season, is worth more than €555million.

It was already believed that Messi was on an extraordinary salary at Barcelona, given he is recognised by many as the greatest current player of the world's most popular sport.

The leaking of the exact sums payable to Messi has caused a stir, coming at a time when embattled LaLiga giants Barcelona are reported to have built up debts of over €1billion.

Koeman rejected any suggestion that Messi's contract is in any way connected to Barcelona facing a financial hurdle, insisting he has "helped this club to make it very great".

The club's record scorer, who netted his 650th Barcelona goal in Sunday's 2-1 win over Athletic Bilbao, could leave on a free transfer in a matter of months.

And Koeman vowed that if anyone employed by Barcelona was proven to have leaked private details, they would be shown the door.

"If you are part of the club, you have to help the club, the coaches, the players. If someone from the club has leaked this, they cannot have a future at this club," Koeman said.

"They are things that come out, that cannot come out. There are people who are interested in hurting Messi and Barca."

Messi is sure to have been unimpressed by his personal details making it into the public domain, but the record six-time Ballon d'Or winner did not let it impede his performance on the pitch against Athletic.

Speaking after the game, Koeman expressed alarm that anyone would want to cause upset in the ranks, particularly concerning Messi, a player destined to be remembered as an all-time great.

"You have to respect him, I see bad intention and desire to hurt," Koeman said, quoted by Mundo Deportivo.

"We must try to find out how this could have come out in the press and we have to focus on our work, that the team are well, and we cannot allow ourselves to lose focus over this issue."

Ronald Koeman said Barcelona "can't aspire to much" without Lionel Messi after the Argentinian scored another landmark goal in Sunday's 2-1 win over Athletic Bilbao.

Messi was headline news earlier in the day when a report by El Mundo claimed the deal he signed at Camp Nou in 2017, which expires at the end of this season, is worth more than €555million.

He proved his worth to Barca with a fine free-kick midway through the first half - his 650th goal for the club - before Jordi Alba's own goal drew Athletic level early in the second half.

Antoine Griezmann secured all three points with the winner 16 minutes from time, though, to help Barca leapfrog Sevilla and Real Madrid into second in LaLiga, 10 points behind leaders Atletico Madrid.

Head coach Koeman was less than impressed with the details of Messi's contract surfacing, but insists the saga did not provide any additional motivation for a player he believes is the world's best.

"We've known, for quite some time, that he's the best in the world," the former Netherlands coach told Movistar Plus.

"He's done a lot for the club. He's decisive during games. You have to respect everything he's done. He's a great player, he gives us creativity in attack. Without Leo, you can't aspire to much."

Koeman added, according to Marca: "He hasn't been more motivated today [because of the reports]. What's happened has been for bad intentions, to cause harm.

"We have to be united and focused. Things that are published have to be put to the side, but it's tough."

It seems unlikely that Barca will rein in Atletico, who can move 13 points clear if they win their game in hand, but Koeman says his improving side have no intention of giving up hope of claiming the title.

"The team is improving," Koeman added. "There's concentration, mentality. I'm not saying we didn't have that before, but we're growing in confidence.

"It's important to be second. We want to be as high as possible. The gap to the leaders is big but we have to keep going."

Griezmann's late winner maintained his superb record against Athletic.

The France international has now been involved in 15 goals against the Basque side (nine goals and six assists), more than he has achieved against any other team in the competition.

The former Atletico Madrid forward was pleased to overcome an obdurate opponent and had words of praise for Ousmane Dembele, whose fine pass played in Oscar Mingueza in the build-up to the winning goal.

Griezmann told Movistar Plus: "Sometimes you play and sometimes you don't but in the end we are all part of this and we need everyone. Ousmane is playing very well, he is taking good care of himself and we try to ensure that he is in the best condition."