Kalidou Koulibaly tested positive for coronavirus ahead of Napoli's Coppa Italia semi-final second leg with Atalanta and Serie A meeting with Juventus.

The centre-back returned a positive result on Friday and began self-isolating ahead of Saturday's league game against struggling Genoa.

Napoli are scheduled to face Atalanta for a place in the Coppa Italia final on Wednesday and Juve – who sit two points ahead of them in fourth in Serie A – the following Saturday.

A club statement read: "After the swabs carried out this morning, Kalidou Koulibaly tested positive for COVID-19.

"The player is asymptomatic and will observe a period of self-isolation at home."

Napoli are already without Faouzi Ghoulam for their trip to Genoa after the full-back tested positive for coronavirus.

After taking on Juventus, Napoli travel to Granada for the first leg of their Europa League last-32 tie on February 18.

Ajax goalkeeper Andre Onana has been suspended for 12 months by UEFA due to a doping violation, the Eredivisie club have confirmed.

Ajax and Onana will appeal to the Court of Arbitration for Sport (CAS) to overturn the ban, imposed after an out-of-competition test in October 2020 found the substance Furosemide in the player's urine.

The club said the test result was due to Onana, 24, mistakenly taking Lasimac – a drug prescribed to his wife – when he felt unwell.

UEFA therefore accepted Onana "had no intention of cheating", an Ajax statement read.

It added: "However, UEFA believes, on the basis of the applicable anti-doping rules, that an athlete has a duty at all times to ensure that no banned substances enter the body."

The suspension is effective from Friday and applies to "all football activities, both national and international".

Ajax managing director Edwin van der Sar said: "We explicitly renounce performance-enhancing drugs, we obviously stand for a clean sport.

"This is a terrible setback, for Andre himself but certainly also for us as a club. Andre is a top goalkeeper, who has proven his worth for Ajax for years and is very popular with the fans.

"We had hoped for a conditional suspension or for a suspension much shorter than these 12 months, because it was arguably not intended to strengthen his body and thus improve his performance."

Cameroon international Onana has been a key man for Ajax since his debut in 2016-17, playing his part in runs to the Europa League final and Champions League semi-finals.

His absence is the latest blow to Ajax, who earlier confirmed they would be unable to correct the administrative error that saw Sebastian Haller left out of their Europa League squad.

Haller, signed from West Ham for a club-record €22.5million last month, was not included in Ajax's initial list for European competition for the second half of the season.

Coach Erik ten Haag described the mistake as "an administrative error with major consequences" and "an incredible setback" for the player, although he confirmed Ajax would be addressing the matter with UEFA.

However, a further club statement has now confirmed UEFA sent "a final message" to say Haller could not be added to the group.

Haller has scored two goals in his first seven games for Ajax in all competitions.

"There is a spirit in the team but also the club – a dynamic in the last months and last years. That should lead us one day to a title, that's our big goal."

Bayer Leverkusen are one of Germany's biggest clubs, but not since the 1993 DFB-Pokal have they celebrated silverware.

Leverkusen have come close on numerous occasions in the Bundesliga – runners-up in 1997, 1999, 2000, 20002 and 2011, while they also reached the 2002 Champions League final, succumbing to Zinedine Zidane's iconic volley in Glasgow.

There were also runners-up appearances in the DFB-Pokal – 20002, 2009 and 2020. But an exciting and entertaining Leverkusen, even in the post-Kai Havertz era, are on the right track amid Bayern Munich's domestic and European dominance.

Leverkusen sporting director Simon Rolfes told Stats Perform News: "It's not easy if you're playing with the best team in the world – Bayern – but we have made a step forward and quite close to the top. We want to go forward. If it happens this year, fantastic. But we want to proceed and develop the squad, and mentality."

When star Havertz left for Chelsea at the start of the season in a transfer that could rise to €100million, and Kevin Volland joined Monaco, it left a noticeable hole at BayArena, where the pair scored 30 goals across all competitions in 2019-20.

But led by prodigy Florian Wirtz and a thrilling core of players, including Moussa Diaby, Leon Bailey and Nadiem Amiri, Leverkusen are continuing to challenge this term.

Leverkusen are third in the Bundesliga – three points behind RB Leipzig and 10 adrift of reigning champions Bayern – while Peter Bosz's side are preparing to face Young Boys in the Europa League last 32 and Rot-Weiss Essen in the DFB-Pokal round of 16.

With Havertz having departed, Leverkusen have a better goals/game ratio (2.5) through 26 games across all competitions this season, compared to 1.8 in 2019-20. The club have also improved defensively – goals conceded/game (1.0) and expected goals against (1.0) are better than last term (1.3) and (1.4) respectively.

Collecting 32 points, Leverkusen have played the best first half of a Bundesliga season for seven years – they collected 37 points at this stage in 2013-14.

Leverkusen have also exceeded their xG value of 23.1 to almost nine goals (8.9) – only Bayern have a greater margin between goals and xG (13.9). 

"In general yes because it's a chance for other players to develop and take more responsibility in the team and on the pitch," Rolfes, who was appointed in 2018, said when asked if he was always confident following the exits of Havertz and Volland. "We had the view that there could be other players who could take a step forward. The only thing for sure is Havertz is a world-class player, a fantastic guy and player. It's very difficult to replace him, so we said, it's not our direction to find a replacement for Kai because you will never find that replacement.

"We said okay, we will give our own players the chance to grow, this strategy works out very fast. It's always a risk for sure, but we have the confidence in those players to make a step forward, and also the team. If your superstar is gone, everyone knows we have to give more.

"We try to build-up, play offensive with ball possession, straightforward – the kind of style we showed against Borussia Dortmund [2-1 on January 19] is what we want. We want to have the ball, a lot of clubs and trainers are speaking to play without the ball, in Germany it's very popular, but we want to have the ball and want players who want the ball."

The emergence of teenage sensation Wirtz, and development of Diaby, Bailey, Edmond Tapsoba and Amiri, has further highlighted Leverkusen's successful recruitment and philosophy, which has become synonymous with German clubs.

"You have to have a clear strategy," Rolfes, who made almost 400 appearances for Leverkusen between 2005 and 2015, said. "A clear strategy of recruitment but also your playing style. That's really important for players but also the success of a club – both are strongly connected. For your playing style, you have to sign the right players. Then you have the chance that the players adapt quicker and develop better in your system because they feel comfortable in the way of playing. That's crucial.

"We know the Bundesliga, financially solid, but we are not at the top that we can sign every player, we have to develop players. The strategy is to recruit good players for our style and develop them to the top. Some clubs in Germany are quite successful with this."

"We are focusing on that talent and try to find them," he said. "We analyse millions of data with artificial intelligence, to pre-select and be early. It's not because we know players other clubs do not know, maybe 20 years ago, but everything is transparent. But you have to find them a bit quicker, but also clear in your playing style and what can they develop with your training work, in which areas they can develop in weak points. Because we are not signing players where everything is 100 per cent, we know they have weak points, but we know we have to work with them on that."

Data and AI continue to play a huge role in football, with Rolfes adding: "It's very important and because the data will be better and better, it will become much more important in the future because you will get better results. We are working with our own team on scouting, preparing for next matches – just in our daily work."

The likes of Michael Ballack, Toni Kroos, Bernd Leno and Havertz have all made names for themselves at Leverkusen, and Rolfes continued: "We count on the young players [at Leverkusen]. We give them trust and the opportunity to play. For example, Wirtz, we give him the chance to replace Havertz and not sign another star to put in front of him. That is one thing.

"We have a very professional environment, we really take care of the guys – try to develop them, work on the pitch and prepare them for top football. We have an advantage that the media surrounding is not so big here. That's good for young players to have a familiar environment where they feel very comfortable and less stressful, then try to reach the best level on the pitch."

Wirtz is the heir apparent to Havertz, having made an immediate impact after the 17-year-old swapped Cologne for Leverkusen in 2020.

Having made his debut in May 2020, Wirtz became the youngest goalscorer in Bundesliga history the following month, finding the net in a 4-2 defeat to Bayern after coming on as a substitute. Dortmund's Youssoufa Moukoko has since snatched that record.

Among all players with at least 50 dribbles in this season's Bundesliga, only Augsburg's Daniel Caligiuri has a better dribbles success rate (70 per cent) than Wirtz (65 per cent). 

Wirtz is one of 50 players born in 2003 or earlier to appear in Europe's top five leagues this season. Those 50 players have collected a total of 14 goal involvements – with seven of them coming from Wirtz. 

Among all players in Europe's top five leagues born in 2003 or earlier, Wirtz played the most minutes in all competitions this season (1,579) and had the most goal involvements in all comps (11 – six goals and five assists). 

"I saw him for the first time at 13. Now I have to say, he is playing Bundesliga the same way he was playing at 13, 14, 15, 16 – I followed him all the years. I always said okay, that's the player for us, the player for Leverkusen. That was not a surprise for me when he came to us and adapted very quick to our style," former Germany international Rolfes said.

"It was also one argument I said to him during the transfer. I said, 'you are a player for us, you will develop your skills and strengths much better because that's what we need in our style'. His development is fantastic."

Like Havertz, Bailey could be the next Leverkusen star to leave amid constant speculation over his future.

The 23-year-old winger, who has scored four goals and supplied five assists in the 2020-21 Bundesliga so far, has been linked with the likes of Manchester United and Manchester City and Rolfes is unwilling to sell the Jamaican to just any club.

"He's played a fantastic season," Rolfes said. "He struggled a bit last season, but he is performing at a very high level. A good guy in the squad. He has a chance to score goals for sure. A fantastic technique. That's part of lives also, to sell players but we want to sell to the top eight clubs in the world, but not to other clubs. Sometimes a player will leave us. We have a contract with Bailey but we are quite relaxed."

Diaby is another prime example for Leverkusen, where the accelerating Frenchman has 561 sprints in the league this season, more than any other player. 

The former Paris Saint-Germain speedster has been involved in 15 goals in all competitions in this season (in 26 games) – with his next goal involvement the 21-year-old would already reach his value from his first season in Leverkusen (16 in 39 games). 

"When we extended the contract until 2025, that was a really nice Christmas present to extend the contracts of Diaby, Tapsoba and Wirtz," Rolfes said. "[Diaby] is a key player of our squad. His acceleration and speed is outstanding. He has developed on scoring and assisting. To use his acceleration on a top, top level. He has potential to develop further. I'm very, very happy he is part of our squad."

Meanwhile, Timothy Fosu-Mensah could be the latest success story for Leverkusen, who also completed the signing of Netherlands Under-20 international Jeremie Frimpong from Celtic on Wednesday.

After joining Manchester United's academy in 2014, the 23-year-old called time on his Old Trafford stay in January, and Rolfes said: "He is not so young but the last two years, you had the feeling there was more in the box than there was in the last two years. That's interesting for us, to sign that kind of player where you have the feeling they can reach more. We want to help him.

"Timothy is a really good guy, ambitious guy. I like this. He has the ability, the physicality, very fast, a good technique. A lot of fundamental things that are important for our playing style. Then if the mentality and ambition isn't right, then let's work on that to develop you. I'm convinced Timothy can be the next example for our club."

Lionel Messi, Cristiano Ronaldo and Neymar are three of the superstars who have been voted into UEFA's Men's Team of the Year by fans, with Virgil van Dijk also included despite missing a chunk of 2020 through injury.

Fans had from November 30 to January 6 to cast their votes, and a host of predictable names made the cut, though Champions League winners Bayern Munich dominate.

There are five players from Bayern's treble-winning 2019-20 in the team, including Robert Lewandowski – winner of The Best FIFA Men's Player of the Year award – and Thiago Alcantara, who has since joined Liverpool.

The other Reds player in the side is Van Dijk even though the Dutch centre-back has only played five Premier League games this season due to a serious knee injury.

However, earlier in the year he inspired Liverpool to their first league title since 1990.

Ronaldo was named in the side for a 15th time after helping Juventus to another Scudetto.

Messi earned his 12th inclusion despite failing to help Barcelona to LaLiga success in what was a largely difficult year for the Blaugrana and their captain.

UEFA confirmed the final selection for the women's team as well, with six players from Lyon's Women's Champions League-winning squad in the side.

 

Men's Team of the Year:

Manuel Neuer (Bayern Munich and Germany); Joshua Kimmich (Bayern Munich and Germany), Sergio Ramos (Real Madrid and Spain), Virgil van Dijk (Liverpool and Netherlands), Alphonso Davies (Bayern Munich and Canada); Thiago Alcantara (Bayern Munich/Liverpool and Spain), Kevin De Bruyne (Manchester City and Belgium); Lionel Messi (Barcelona and Argentina), Cristiano Ronaldo (Juventus and Portugal), Robert Lewandowski (Bayern Munich and Poland), Neymar (Paris Saint-Germain and Brazil).

Women's Team of the Year:

Sarah Bouhaddi (Lyon and France); Lucy Bronze (Lyon/Manchester City and England), Kadeisha Buchanan (Lyon and Canada), Wendie Renard (Lyon and France), Magdalena Eriksson (Chelsea and Sweden); Kheira Hamraoui (Barcelona and France), Amandine Henry (Lyon and France), Delphine Cascarino (Lyon and France), Sara Bjork Gunnarsdottir (Wolfsburg/Lyon and Iceland); Danielle van de Donk (Arsenal and Netherlands), Pernille Harder (Wolfsburg/Chelsea and Denmark).

Sevilla have announced Julen Lopetegui has signed a new three-and-a-half-year contract as the Europa League champions' head coach.

Lopetegui was appointed by Sevilla at the start of the 2019-20 campaign and led them to a fourth-place finish in LaLiga as well as the club's sixth Europa League/UEFA Cup crown.

The Basque coach had previously seen his reputation take a hit.

He was sacked by Spain just before their 2018 World Cup campaign was due to begin as a result of accepting an offer to take charge of Real Madrid after the tournament, and he only lasted until October with Los Blancos before being dismissed again.

His first season at Sevilla saw the Andalusians finish in the top four after two campaigns out, though Lopetegui's biggest achievement was presiding over their successful Europa League run.

Sevilla had to see off Roma, Wolves and Manchester United in a tricky knockout phase, before then recovering well from a shaky start in the final to beat Inter 3-2.

The former Porto boss has also taken charge of a positive – if stylistically unspectacular – start to the 2020-21 campaign, with Sevilla sixth on 30 points after 16 matches.

However, they have at least two games in hand on all but one of the five teams ahead of them, and beat fifth-placed Real Sociedad 3-2 on Saturday.

After Saturday's victory, Lopetegui has a 58.2 per cent win rate in LaLiga with Sevilla, the best record of any coach (with more than four games in charge) in the club's history.

Lopetegui also guided Sevilla through their Champions League group, with Borussia Dortmund awaiting in next month's last-16 clash.

Kai Havertz was dubbed the 'Crown Prince of German football' while at Bayer Leverkusen but the Bundesliga club have a new star now: Florian Wirtz.  

While his former club colleague has struggled so far to make an impact at Chelsea, Wirtz - the latest young gem to come through at Leverkusen - is dazzling for Peter Bosz's team, who remain ensconced in the top four despite defeats either side of the mid-season break in Germany's top flight. 

The 17-year-old did not wait long to suggest he could be the heir apparent, either. Having made his debut in May 2020, he became the youngest goalscorer in Bundesliga history the following month, finding the net in a 4-2 defeat to Bayern Munich after coming on as a substitute. Youssoufa Moukoko has since snatched that record away.

This season, Wirtz has gone from the periphery to centre stage, scoring twice and providing four assists in 13 appearances. His transition from promising talent to first-team regular has been swift, leading to comparisons to Havertz, the playmaker who swapped the BayArena for Stamford Bridge.

However, for Bosz, while both players have huge potential, the duo differ in so many ways.

"I never compare players with each other because that is impossible. There is no player like the other," Bosz told Stats Perform News. "You can't compare them. That's not possible.

"I also won't do that with Florian Wirtz, because he has his own style. He is different from Kai Havertz, who is more of a striker. Florian Wirtz, as far as I am concerned, is a midfielder, so you can't compare them.

"Also, you can't compare them physically; Kai is 1.92metres (6ft 3in), Florian is shorter. One is left-footed, the other one right-footed. They both have their own style. But both of them are very good. Both are very talented. Both have a huge career ahead of them.

"And Florian is only 17 years old. What he has shown though in the Bundesliga already is something special."

Wirtz has been a part of a Leverkusen squad that has impressed so far in this campaign, both at home and abroad. 

Despite a first defeat to Bayern Munich before the mid-season pause in Germany, Leverkusen gathered 28 points from their opening 13 league games. Only three times have they managed to collect more points across the same period - and on each of those occasions they went on to finish in the top four.

In the Europa League, Die Werkself finished top of Group C to qualify for the last 32 in style, winning five of their six round-robin fixtures. Having reached the quarter-final stage of the competition last year, when they lost 2-1 to Inter, hopes are high they can go further this time around. 

But while there has been much to please Bosz and Leverkusen's supporters so far, the Dutch coach insists there is still plenty more to come from his squad.

"Everyone still has some space to improve," he said, insisting no player has reached a nine out of 10 yet. "The difference to last year is that we are very consistent now.

"We deliver stable performances. It means that we concede less goals. We stand more compact on the pitch.  

"But we have also lost important players. Kai Havertz went to Chelsea, Kevin Volland to Monaco. I think that our team spirit has improved. This is the biggest step ahead." 

Despite Havertz no longer being around, Leverkusen have been excellent going forward, with champions Bayern the only team to score more in the Bundesliga so far. Their attacking intent has not come at a considerable cost defensively either - only second-placed RB Leipzig have conceded fewer goals.

The emergence of Wirtz has been one of the factors in helping Leverkusen continue to progress as a club, even with those key departures in the previous transfer window.

 

"He's a very talented young player. He has a lot more to improve. But, you know, he's only 17," Leverkusen winger Leon Bailey told Stats Perform News about his talented young team-mate.

"He's still learning. But he has a lot of qualities that a lot of older players don't have yet. And that's something you can see clearly, and this is something that's special. 

"And I think, as the years go by, he will only get better. There is a lot more to come from him, as he understands more and get a lot more experience.  

"I would say he's very smart. He has a lot of quality when he's on the ball. And he has a great passing ability."

Bailey's assessment is backed up by Wirtz's output, with no Leverkusen player having created more chances from open play than his tally of 23. While his passing accuracy is perhaps lower than might be hoped for at 73 per cent, his touches in the opposing box (31) and passes into the final third (55) are examples of his forward thinking when in possession. 

Those risks have reaped their rewards this term too, considering his six goal contributions so far. Bosz clearly has faith in him, as only goalkeeper Lukas Hradecky and Moussa Diaby have played more minutes in the Bundesliga so far. 

Any suggestion of becoming the new Havertz may be wide of the mark, but the future looks bright for Wirtz, the latest jewel to emerge at Leverkusen. 

Ole Gunnar Solskjaer is convinced Manchester United have developed significantly since suffering three semi-final defeats in 2019-20 as they prepare to host rivals Manchester City in the last four of the EFL Cup.

Had things gone a little differently last term, Man United might have ended the campaign with three trophy successes, breaking Solskjaer's duck as the club's boss.

But, United lost 3-1 to Chelsea in the FA Cup semis, suffered a late 2-1 defeat to Sevilla in the Europa League and fell at the same stage of the EFL Cup to City, losing 3-2 on aggregate.

The elimination by City was particularly chastening given the manner of the first-leg home loss, as United were swept aside and somewhat fortunate to only lose 3-1 – the 1-0 away win in the second meeting was insufficient to save their hopes.

But it could be argued there is a different aura to this United side. They are level on 33 points with pacesetters Liverpool in the Premier League but have played one game less, and they head into Wednesday's game unbeaten in seven across all competitions.

The EFL Cup semi-finals this season are limited to one-game affairs rather than being split over two, and Solskjaer is adamant United are a different animal.

"When you get to a semi, you've done a lot of good work to get there and naturally you're playing against better and better opposition," Solskjaer told reporters.

"I think we've improved immensely in a year since the last semi [against City] and even when we were in Europe in August.

"For me, it's a step closer to get to the final, we've developed a lot, it's easy to say, 'have we learned?' But it's not about if we've learnt, it's about some fine margins in those semi-finals as well.

"When you win games of football, you don't think about it's a semi-final or a normal game or a league game or a quarter final, you just think about this game and want to win it."

United have faced City six times since Solskjaer was initially installed as Jose Mourinho's replacement in December 2018 and, perhaps rather surprisingly, has the edge over Pep Guardiola in their head-to-head with three wins to two.

Their most recent meeting, just under a month ago, was a rather cagier 0-0 draw that had few conclusions drawn from it by most, though Solskjaer still felt there were signs of United's progression.

They have every reason to be wary again, however – City have progressed from their previous five EFL Cup semis and lost only twice in 23 games in the competition under Guardiola.

"I've seen progress," Solskjaer continued. "Sometimes the results don't show the whole picture of the game, some of our counter-attacking goals in the wins we've had have been brilliant; in the league away when we won, we could have scored four or five in a 10- or 15-minute period.

"A few counter attacks there were out of this world but we had less control of the ball and defended fantastically. I think the last game was more or less 50-50 in possession, maybe a more cagey game from both teams but still I felt that was a progression having stayed more in the game.

"You never know what kind of system he [Guardiola] is going to come up with but you know you've got to defend really well against Man City.

"It's hard to keep the ball in their half, they find a way of overloading, so you've got to be brave, compact, trust your players.

"When we have the ball, we have to be able to keep it, play out of their press because they're one of the quickest to put the counter pressure on and win the ball high up.

"So, it's a balance. We've found that balance. We didn't have the 'X factor' last game, maybe because they were a little bit more cagey and set up to counter attack more as well.

"They've been some fascinating games and I feel we've got closer and closer and results sometimes you can't control."

Son Heung-min scored his 100th goal for Tottenham in all competitions as he netted against Leeds United, with Harry Kane the provider once again.

The South Korea forward, who moved to north London in 2015, has been in sensational form in 2020-21, and moved onto 99 Spurs goals with a cool finish on the break at Liverpool in December.

Son drew a blank in his next three outings, failing to find the target as Spurs went down 2-0 to Leicester City, before he had a goal disallowed in an EFL Cup win at Stoke City and then only managed one attempt at goal in a 1-1 draw with Wolves on December 27.

However, after Wednesday's scheduled game with Fulham was postponed, his landmark effort came against Leeds on Saturday.

Kane – who has now assisted nine of Son's 12 Premier League goals this term – whipped in a brilliant cross from the right, which his strike partner swept home first time.

Son's strike put Spurs 2-0 up just before half-time, with Kane's penalty having put Jose Mourinho's men ahead.

With 169 goals to his name, Kane is the only Spurs payer to have netted more goals than Son since September 2015.

It was also the 13th time Kane and Son have combined for a goal this season, which is a joint-record in a single Premier League campaign.

Son has scored 65 of his 100 Spurs goals in the Premier League – 35 coming from his right foot, 25 from his left, and the remainder with his head.

The former Bayer Leverkusen forward has also supplemented that tally with a further 33 assists, while he has scored 15 times in the FA Cup and EFL Cup.

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