Sergio Aguero insisted his retirement is not a tragedy as he looked back on an outstanding career that taught him to "turn defeat into victory".

The former Manchester City and Barcelona forward announced his retirement on Wednesday after suffering from a heart problem.

Aguero struggled with chest discomfort and dizziness, which were later attributed to a heart arrhythmia, in Barcelona's 1-1 draw with Deportivo Alaves on October 30.

After consultation with specialists, Aguero – who is City's leading scorer in Premier League history – accepted he would not be able to play again as the risk to his health would be too great.

But despite his sudden retirement, the 33-year-old insisted he would look back on his "amazing career" fondly as he reflected on the lessons football has taught him.

"I've always known that I'd give it all to have a chance to play again," Aguero said in his statement published on Twitter. However, after the last exams, I was advised by my doctors to cease practising professional football.

"Their words were sufficient to make a choice. Retiring under these circumstances is difficult, but life comes first - I've known that from the start.

"One of the many things that football taught me is that you can turn defeat into victory. This won't be any different. It's surely painful but it's no tragedy.

"A tragedy would have been another thing altogether. My thoughts are not on the time I could have played on, they are on the wonderful 18 years I did get to play.

"This amazing career will remain with me, and so will carrying it out with passion and dedication year after year. I keep the affection and care I received from each of the teams I played for when I was just a kid.

"And then at Independiente, Atletico Madrid, Manchester City, Barcelona, and Argentina's national team, always so dear to me. My recognition goes to the fans, who stood by me through thick and thin - your support has made me stronger."

Aguero left City for pastures new at Barcelona on a free transfer in July, having scored 184 times in the Premier League at a rate of one every 108 minutes, the best frequency of any player to net at least 20 in the competition's history.

Indeed, the former Argentina international could play another 2,520 minutes of Premier League action (the equivalent of 28 full games) without scoring, and he would still boast the best minutes-per-goal ratio of any player to have scored 20 or more times.

Aguero is also the Premier League's highest-scoring overseas player and holds the record for the number of goals scored for one club, while his 12 hat-tricks are another benchmark in the competition.

But as his career comes to an end, the former Atletico Madrid man heaped praise on those he has worked with.

"I want to thank all the trainers, team-mates, colleagues, staff, physios and managers who allowed me to develop my career in the best of conditions," he continued.

"My special gratitude goes to my family and friends, who were always by my side. And to my agents, the same I've kept since I was 14 years of age, who accompanied me with utmost professionalism and honesty.

"Beyond the titles I've contributed to win - something I greatly value - my biggest achievement has been earning the respect of my colleagues, and the love from the world of football.

"That's something that won't change - I'll keep it in my heart and it will make me strong for what's to come.

"Life goes on, and there's plenty of it ahead. It will be a new stage, a different one indeed, but I'll keep on just like I've done so far: always positive, with enthusiasm and joy."

Sergio Aguero has retired at the age of 33 due to a heart problem.

The Barcelona forward announced his decision to retire in a statement on Wednesday that was delivered at an event featuring president Joan Laporta and the club's first-team players.

Aguero, who starred for Atletico Madrid before becoming a Manchester City great, suffered chest pain in the draw with Deportivo Alaves on October 30, which the club confirmed was down to a heart arrhythmia.

Sergi Barjuan, interim coach at the time, said Aguero told him he was feeling "a little dizzy".

Further tests resulted in Aguero being ruled out for three months to undergo a "diagnostic and therapeutic process". 

However, after consultations with specialists, the Argentina international has been told it is too much of a risk to continue playing.

An emotional Aguero said at Camp Nou on Wednesday: "This conference is to communicate that I have decided to stop playing football.

"It's a very difficult moment. The decision I've made, I've taken it for my health, because of the problem I had a month and a half ago. I was in good hands with the medical staff, who did their best, who told me the best thing would be to stop playing.

"So, 10 days ago I made that decision, but I want to tell everyone I did everything to have some hope, but there wasn't very much."

Aguero joined Barca on a free transfer from City in July, but a calf injury meant he did not make his debut until October.

He made five appearances in all competitions for Barca, playing just 166 minutes, with his sole goal coming in the form of a late consolation in a 2-1 Clasico defeat to Real Madrid.

Aguero scored a club-record 260 goals in 390 appearances in a trophy-laden decade at City, including their famous last-gasp winner against QPR in 2011-12 to clinch the club's maiden Premier League title.

Sergio Aguero has retired at the age of 33 due to a heart problem.

The Barcelona forward announced his decision to retire in a statement on Wednesday that was delivered at an event featuring president Joan Laporta and the club's first-team players.

Aguero, who starred for Atletico Madrid before becoming a Manchester City great, suffered chest pain in the draw with Deportivo Alaves on October 30, which the club confirmed was down to a heart arrhythmia.

Sergi Barjuan, interim coach at the time, said Aguero told him he was feeling "a little dizzy".

Further tests resulted in Aguero being ruled out for three months to undergo a "diagnostic and therapeutic process". 

However, after consultations with specialists, the Argentina international has been told it is too much of a risk to continue playing.

Aguero joined Barca on a free transfer from City in July, but a calf injury meant he did not make his debut until October.

He made five appearances in all competitions for Barca, playing just 166 minutes, with his sole goal coming in the form of a late consolation in a 2-1 Clasico defeat to Real Madrid.

Aguero scored a club-record 260 goals in 390 appearances in a trophy-laden decade at City, including their famous last-gasp winner against QPR in 2011-12 to clinch the club's maiden Premier League title.

Could Bayern Munich really part with Robert Lewandowski?

The 33-year-old talisman has broken all kinds of records in Munich, but he is not getting any younger.

With Erling Haaland the face of a new era, Bayern may be tempted for the Borussia Dortmund star to lead the way.

TOP STORY – LEWANDOWSKI OUT, HAALAND IN?

Bayern Munich could sell Robert Lewandowski to raise funds for in-demand Borussia Dortmund star Erling Haaland, according to Sport Bild.

Bundesliga champions Bayern are planning with Lewandowski for the future, though they have reportedly not written off the idea of bringing in Haaland, who has been linked with Manchester City, Real Madrid, Barcelona, Liverpool, Juventus, Paris Saint-Germain, Chelsea and Manchester United.

Should Bayern and Lewandowski not agree to a new deal, the Poland international is believed to be interested in a switch to the Premier League or PSG.

As for Bayern, they feel cashing in on Lewandowski for around €60million would help in landing Haaland, who has a release clause of €75m.

Bayern are also eyeing Barca's Ousmane Dembele, while Inter's Lautaro Martinez, Fiorentina forward Dusan Vlahovic and Juventus star Federico Chiesa are among their alternative options.

ROUND-UP

- Eurosport claims LaLiga champions Atletico Madrid want to bring in wantaway United forward Anthony Martial in a swap deal.

- Barca and Atletico are interested in Chelsea captain Cesar Azpilicueta, says Sport. Azpilicueta is a free agent at the end of the season. Chelsea team-mate Antonio Rudiger is also set to become available on a free transfer.

- Calciomercato reports PSG are eyeing a move for Bayern forward Kingsley Coman. The 25-year-old Frenchman made three appearances for PSG before leaving the capital in 2014.

- Salzburg sensation Karim Adeyemi is wanted by Barca, Inter and Liverpool but the Germany international wants a move to Dortmund, according to Fabrizio Romano.

Antoine Griezmann faces a spell on the sidelines after suffering a thigh injury in Atletico Madrid's derby defeat to Real Madrid on Sunday.

Griezmann had to be withdrawn at half-time in Atleti's 2-0 LaLiga loss at the Santiago Bernabeu.

The France international underwent an MRI scan and discovered he sustained a muscle injury to his right thigh.

Griezmann will seemingly miss the trip to Sevilla on Saturday and is also set to sit out the visit to Granada next Wednesday.

The 30-year-old has scored seven goals in 18 games since re-joining the Spanish champions from Barcelona on transfer deadline day.

Diego Simeone's side are fourth in the table following back-to-back LaLiga defeats, 13 points behind leaders Los Blancos.

Griezmann scored in a 3-1 win at Porto last week that sealed Atleti's place in the last 16 of the Champions League, setting up a tie against Manchester United.

Kylian Mbappe, Lionel Messi and Sergio Ramos will come up against Real Madrid after Paris Saint-Germain were paired with Los Blancos in the Champions League round of 16, which had to undergo a re-draw.

PSG were initially drawn against Manchester United on Monday, throwing up a tantalising encounter between Lionel Messi and Cristiano Ronaldo.

However, a technical error meant the draw had to take place again and while Messi will not meet Ronaldo just yet, the Barcelona great will go up against his former club's Clasico rivals.

Having finished second in Group A behind Manchester City, who were handed a favourable tie against Sporting CP, PSG will host Madrid in the first leg in February before visiting the Santiago Bernabeu in March.

That means Mbappe, who is a high-profile target for Madrid and could well have already signed a pre-contract agreement with Los Blancos by the time these fixtures roll around, will go up against his suitors.

It also sees Madrid legend Ramos go up against his old club, and it is the same story for Madrid boss Carlo Ancelotti, who coached PSG from 2011 to 2013.

United, on the other hand, will face Atletico Madrid, who had initially been due to play Bayern Munich. The Bundesliga giants have been drawn against Salzburg.

Liverpool may well lament their luck. Salzburg had been their original opponents, but Jurgen Klopp's team now have to prepare for a tie against Serie A champions Inter - albeit they made light work of the Nerazzurri's rivals Milan in the group stage.

Coincidentally, holders Chelsea were again drawn against Lille, having been set a tie with the Ligue 1 champions during the initial draw. 

Villarreal will take on Juventus and Ajax go up against Benfica.

Champions League last 16 draw in full:

Salzburg v Bayern Munich
Sporting CP v Manchester City
Benfica v Ajax
Chelsea v Lille
Atletico Madrid v Manchester United
Villarreal v Juventus
Inter v Liverpool 
PSG v Real Madrid

UEFA has confirmed the Champions League last-16 draw will have to be re-done after a technical error with the initial procedure.

Manchester United and Paris Saint-Germain were set to face each other in the knockout stage, but that headline fixture and the other ties will have to be redrawn after what UEFA labelled as a "technical problem with the software of an external service provider that instructs the officials as to which teams are eligible to play each other."

United were initially drawn to face Villarreal, but the sides were unable to play each other as they had previously featured in the same group.

After complaints from affected clubs, including Atletico Madrid, UEFA later announced the draw would take place again at 1500 CET (1400 GMT).

UEFA's deputy general secretary, Giorgio Marchetti, spotted the mistake involving United's ball and ordered the tie to be drawn again. Manchester City were instead picked to go against Villarreal.

Yet United, due to the technical error, were subsequently blocked from being selected as one of the teams eligible to play the next team, which was LaLiga champions Atleti.

Bayern Munich were ultimately picked to face Atleti, while United were drawn in the glamour tie of the round against PSG – a game that would have seen Cristiano Ronaldo and Lionel Messi meet in the knockout stages of the Champions League for the first time since the 2010-11 semi-finals.

The re-draw could well benefit United, given the challenge of facing PSG. However, holders Chelsea and Liverpool were handed favourable draws against Lille and Salzburg respectively.

Inter had been due to face Ajax, while Sporting CP were up against Juventus. Real Madrid had been drawn against Benfica.

UEFA has confirmed the Champions League last-16 draw will have to be re-done after a technical error with the initial procedure.

Manchester United and Paris Saint-Germain were set to face each other in the knockout stage, but that headline fixture and the other ties will have to be redrawn after what UEFA labelled as a "technical problem with the software of an external service provider that instructs the officials as to which teams are eligible to play each other."

United were initially drawn to face Villarreal, but the sides were unable to play each other as they had previously featured in the same group.

After complaints from affected clubs, including Atletico Madrid, UEFA later announced the draw would take place again at 1500 CET (1400 GMT).

Atletico Madrid head coach Diego Simeone insisted the defending champions will not give up on the LaLiga title following their 2-0 derby defeat to Real Madrid.

El Derbi honours went to Madrid, who accounted for city rivals Atletico thanks to goals from Karim Benzema and Marco Asensio at the Santiago Bernabeu on Sunday.

Benzema opened the scoring with a sublime finish in the 16th minute before Asensio doubled the lead approaching the hour-mark in the Spanish capital.

The result moved Madrid eight points clear at the summit and 13 points ahead of fourth-placed Atletico, who have a game in hand.

However, Simeone – a two-time LaLiga winner with Atletico – is refusing to concede the title race just yet.

"Obviously the title is race is still up for grabs," Simeone told reporters. "There's loads of games left to be played, but it's obvious that Real Madrid have a healthy lead at the moment.

"That's credit to them. But we know how the Spanish league works. It's complicated, it's long and we can't allow ourselves to just give up and think further ahead than our next opponent, which is Real Betis.

"We have a game less that we haven't played yet. And we'll have to use that to close the gap with the top. We can't think from about anything else, apart from that."

On the defeat to Carlo Ancelotti's Madrid, Simeone added: "I think it was a game that, up until the first goal, was a very level match where there were chances at either side.

"Madrid were very clinical in front of goal and we improved in the second half. We also had chances, but their goalkeeper did very well to keep them out. And from there, their second goal really was a tough blow for us. I think they won, deservedly, and they were just very clinical in front of goal.

"Well, more than anything, I think we put in another big effort and we played well with [Geoffrey] Kondogbia playing defensively as a centre-back. And the team worked collectively very well and we put in a big effort in Portugal. And today, obviously conceding a goal is painful because it comes from a situation that we talked about as a team.

"But Real Madrid are very good on the counter-attack. I like watching their football a lot, sitting deep and working well hard, and they're very good in transition, which is near to our style of play. Obviously [Carlo] Ancelotti is a very, very good manager and he's come back here to do things well and we've seen that the Spaniard."

Carlo Ancelotti believes Real Madrid are "clear favourites" for the LaLiga title after their convincing 2-0 El Derbi win over Atletico Madrid on Sunday.

LaLiga leaders Madrid moved 13 points clear of fourth-placed Atleti as goals from Karim Benzema and Marco Asensio stretched their unbeaten league run over their city rivals to 11 games.

It was Madrid's seventh consecutive top-flight win and lifted them seven points clear of Sevilla, although Unai Emery's team do have a game in hand.

Asked about his impact on his team's fine run, Ancelotti told a media conference: "I don't think it's the Ancelotti effect; I have a team that leaves me calm because of what they do on the field.

"They handle the game very well and they have defensive commitment. It's a team, not just high-quality players, and that's the difference.

"We are clear favourites [for the title] because we have done very well, better than others, but we are focused on the next matches because a mental downturn can cost us dearly. This is the only way to get closer to winning.

"Of the team I really like the defensive aspect; it is the one that we have improved the most since the beginning of the season.

"We are more solid. Although the pressure is not too high, with a lower block we use the forwards for the counter-attacks."

Ancelotti was fulsome in his praise of Luka Modric after another supreme display from the veteran midfielder.  

The Croatia international made a joint-team high three interceptions and completed 90.1 per cent of his passes, with his all-round display leaving his boss purring.

"I have congratulated him on the game because he was incredible," Ancelotti added.

"I don't know what I said, but he was spectacular with and without the ball. It was extraordinary. 

"He had a spectacular game, with personality and character. He is an extraordinary player."

Both of Madrid's goals were created by Vinicius Junior, with the Brazil international becoming the first player to provide two assists in a LaLiga clash between Madrid and Atleti in the 21st century.

"He is improving himself," Ancelotti explained. "I don't talk to him much because I don't have much to say to him; he just needs to make it effective. 

"I tell him he doesn't have to dribble to do it. You have to do something to help the team and he has made two assists that have helped us win the game."

Diego Simeone has scoffed at the suggestion Atletico Madrid's LaLiga title hopes will be over if they lose to Real Madrid in Sunday's derby.

Reigning champions Atletico go into the game trailing their city rivals by 10 points, albeit with a game in hand.

It is a major moment in the season for both clubs, described by Simeone as "very important", and a victory for the hosts at the Santiago Bernabeu would represent a significant step towards the title.

But Simeone, who confirmed striker Luis Suarez will be involved after a midweek injury scare, is not willing to countenance surrender at this stage of the season.

"As always we are quick to say that LaLiga is over," Simeone said. "LaLiga will always be competitive because there are very good teams.

"There is a group of five or six teams in the upper part that are working very well. We are going to go game by game as ever, and we are not going to change that."

This Derbi will be the 169th between Real and Atletico in LaLiga, with the Bernabeu giants having won 89 times and the Rojoblancos picking up 39 victories.

Real have avoided defeat in their past five home LaLiga games against Atletico (W2 D3) and have kept a clean sheet in the most recent three.

They have never had four successive shutouts against Atletico at home, but that is what Carlo Ancelotti will be pushing for in LaLiga's headline game of the weekend.

Atletico have not won any of their past seven games against Madrid across all competitions (D4 L3), which ranks as their longest such winless run in the rivalry under Simeone.

However, Ancelotti, back for a second spell as Madrid boss this season, has failed to win in his previous four LaLiga games against Atletico (D1 L3).

"We are going to play a very important game, as it always is against our rival," said Simeone in a Saturday news conference. "They are in a great spell as they have shown since the arrival of Ancelotti, with a defensive strength that enhances all their offensive weapons. We will have to take the game where we think we can hurt them."

If Simeone is looking for a battling presence in his side, he might well summon Suarez to start, despite the former Barcelona striker going off in pain early in the win over Porto on Tuesday.

Suarez looked for all the world as though he had suffered a serious muscle blow, only for medical checks since the game to give him the all clear.

"Tomorrow he will be there, and we will assess whether he starts or comes on later," Simeone said.

Suarez has scored 10 goals in 13 LaLiga appearances against Real Madrid, more than any other player has netted against Los Blancos in the competition since his arrival in Spain seven years ago.

Carlo Ancelotti sees no need to assess the impact Diego Simeone has had at Atletico Madrid and can only hope to replicate the Argentine's longevity.

Ancelotti returned to Madrid for his second spell as coach in June, after leaving Everton.

He has overseen something of a resurgence after a disappointing campaign last season, with Los Blancos sitting pretty at the top of LaLiga with 39 points from their 16 games.

Reigning champions Atleti visit Santiago Bernabeu on Sunday for the first Madrid derby of the season. Simeone's men sit 10 points behind Ancelotti's side in fourth place, albeit with a game in hand.

Ancelotti and Simeone have met 15 times previously across all competitions. The Italian has managed five wins to Simeone's four, while six of the encounters were drawn.

However, none of Ancelotti's victories have come in LaLiga, with Simeone's Atleti winning three times out of four – the other game resulting in a draw.

Indeed, Simeone is the only coach that Ancelotti has faced on four or more occasions in LaLiga without winning, though he did enjoy a famous win over Atleti in the 2014 Champions League final, as Madrid clinched "La Decima".

"I am not the one who has to say what Simeone has done at Atletico," Ancelotti told a news conference on Saturday.

"He has put Atleti among the best clubs in Europe. What has happened with Simeone is what all the coaches want, to stay in a club for a long time and leave their mark on the club.

"It is the dream of any coach. Hopefully it can happen to me at Madrid."

If Ancelotti really does wish to stay for a sustained spell at Madrid, then he is off to a strong start – Los Blancos have lost just one league game this term and have finished top of their Champions League group – although the 62-year-old has not spent longer than two years at any club since leaving Milan in 2009.

Ancelotti has managed in most of Europe's biggest rival matches, from the Merseyside and Milan derbies to Der Klassiker and El Clasico, but he insists Madrid must keep a lid on their emotions on Sunday in order to claim the points.

"It is three points. Then the emotional aspect, which is playing a derby against a direct rival," he added.

"It is clear that this is going to put more pressure on both teams. It is a game that all the fans feel in a particular way, but in the table there are three points [on offer]."

Asked if a victory would put Madrid well in control of the title race, Ancelotti replied: "We will have three more points over an opponent who will fight to the end to win this competition. 

"I don't want to put more pressure on this game than it already is.

"We have shown that we have done better than the other teams to date. But the league does not end today, we have to play for six more months and I don't know what can happen. So far we have done better, but we are concerned about the future, not the past."

Ancelotti did not win LaLiga during his first stint at Madrid, and conceded he has unfinished business in that regard.

"I would value it like the other titles we have won," he said.

"The Champions League is the most important competition in Europe and the world. LaLiga is also an important title and it is true that not having won it here gives me more motivation."

Barcelona's financial issues mean they need to get crafty in January transfer window.

The Catalans lost Lionel Messi during the off-season and have struggled this term.

Barca were bundled out of the Champions League this week but will be keen to rescue their season.

TOP STORY – BARCA PLOT RASHFORD SWOOP

Barcelona are planning to swoop for Manchester United's Marcus Rashford, according to El Nacional.

The stumbling block may be United's asking price for Rashford, but the Blaugrana believe they can prise him away based on opportunity.

Rashford has been in and out of United's starting line-up and Barca plan to offer him the chance to lead their attack.

ROUND-UP

- Calciomercato claims Georginio Wijnaldum could leave Paris Saint-Germain for Inter in January as part of a swap deal involving Marcelo Brozovic. The Croatia midfielder is out of contract at the end of this season.

- Joao Felix could join Manchester City from Atletico Madrid, with his agent Jorge Mendes trying to engineer the switch, Calciomercato says.

- Liverpool have an eye on Leeds United's Raphinha and West Ham's Jarrod Bowen ahead of the January transfer window, according to the Liverpool Echo.

- Chelsea are considering a move for Real Madrid midfielder Casemiro, reports El Nacional.

- Brazilian giants Palmeiras want to sign Real Madrid full-back Marcelo, reports Mundo Deportivo. The former Brazil international's contract with Los Blancos expires at the end of this season.

- Ajax and Juventus have their eyes on Bayern Munich teenager Kenan Yildiz, according to Fanatik.

Luis Suarez could still feature for Atletico Madrid in Sunday's crunch derby with Real Madrid after injury fears were eased on Thursday.

The experienced Uruguayan striker hobbled off injured after 13 minutes of the Champions League win over Porto, and he appeared to be in tears at one point on the bench.

Antoine Griezmann, Angel Correa and Rodrigo de Paul scored to earn Atletico a 3-1 victory that carried them through to the last-16 stage.

Since Tuesday's game, it has been unclear just how serious Suarez's problem might be, but Atletico have now issued an update that points to positive news.

In a statement released by the club, it was revealed that Suarez underwent tests at the Clinica Universidad de Navarra, and these showed there was no muscle tear.

"The tests have ruled out that the Rojiblanco attacker suffers any tear, so the evolution of his symptoms will determine his availability for the derby on Sunday," Atletico said.

"Luis Suarez will continue to carry out individualised rehabilitation training and daily physical therapy sessions."

Atletico won LaLiga last season but their hopes of a successful title defence could be all but over if they lose at the Santiago Bernabeu this weekend.

They head into the game sitting 10 points behind Madrid, albeit with a game in hand, having played 15 matches so far.

Suarez was acquired from Barcelona in September 2020 and proved a decisive signing when his goals helped power Atletico to last season's title, scoring 21 goals in 32 LaLiga games for Diego Simeone's side at a rate of one every 119.95 minutes.

He remains a key figure when fit, although the arrival of Antoine Griezmann, also from Barcelona, means Atletico have more firepower in their ranks now.

This term, the 34-year-old has managed seven goals in 15 league games, including 10 starts, with those strikes coming at one every 129.29 minutes.

His shot conversion rate has climbed from 20.19 per cent in 2020-21 to 29.17 per cent this term, a further reason why Atletico would want to have Suarez as an option for the trip to their capital city rivals.

Liverpool are in the market to add depth and quality to their midfield.

The Reds are currently second in the Premier League, after four straight wins.

Liverpool have scored a Premier League-high 44 goals in 15 games.

TOP STORY – LIVERPOOL CHASING FABIAN RUIZ

Liverpool want to sign Napoli's Spain international Fabian Ruiz next off-season to bolster their midfield, reports Fichajes.

The Reds view the 25-year-old as an ideal player on an upward trajectory in his career.

Georginio Wijnaldum exited Liverpool for Paris Saint-Germain last off-season with no obvious replacement added.

ROUND-UP

- Fichajes reports that Atletico Madrid are considering a move for Ajax's Argentinean left-back Nicolas Tagliafico.

- Milan are interested in Fiorentina's Nikola Milenkovic and Real Madrid's Luka Jovic as they look to add depth to their squad reports Gazzetta dello Sport.

- Inter are tracking FC Zurich's 20-year-old Switzerland international defender Becir Omeragic claims Calciomercato.

- The Athletic reports that Southampton will sign ex-Chelsea and Manchester City goalkeeper Willy Caballero as emergency cover. Caballero, 40, is a free agent.