Manchester City have completed the signing of highly rated Argentina youth international Maximo Perrone from Velez Sarsfield.

The 20-year-old is reported to have cost City £8million initially and has signed a deal that runs through June 2028.

Perrone only made his breakthrough at Velez last March, but the central midfielder quickly established himself as a prominent part of the senior team, even wearing the captain's armband on occasion.

His contract had entered its final year, and although City are said to be paying more than his reported £7m release clause, that was sure to be significantly higher if Velez did manage to secure his future into 2024.

Perrone is the latest in a string of exports to fetch Velez a considerable fee in the past six years, with Thiago Almada, Matias Vargas, Santiago Caseres, Maxi Romero and Nicolas Dominguez bringing in roughly £47m between them.

He is City's second recruit from Argentina over the past year, with Julian Alvarez joining from River Plate at the end of last season.

Alvarez was signed midway through last term before spending a period back on loan at River, though no such agreement has been struck for Perrone.

He will link up with City immediately once his participation at the Under-20 South American Championship in Colombia is over.

Perrone scored in Argentina's opening match but was unable to prevent his side losing 2-1 to Paraguay.

Argentina's final group game is on January 27 – if they are not eliminated, Perrone will likely join up with City in February.

Tony Pollard's exit from Sunday's Divisional playoff against the San Francisco 49ers cost the Dallas Cowboys dear.

Pollard was carted off in the closing stages of the second quarter with a low-scoring game tied at 6-6 at Levi's Stadium.

The running back did not return, and the 49ers claimed a 19-12 win as the Cowboys looked lost on offense in the second half.

Initial reports detailed a high ankle sprain for Pollard, but it has since emerged he also sustained a fracture to his left fibula that will require surgery.

Pollard would therefore have been unavailable for the NFC Championship Game against the Philadelphia Eagles even if the Cowboys had scraped through.

That never appeared likely without Pollard on the field at the end of a career year, however.

The 25-year-old finished the regular season with 1,007 rushing yards, the most on a Dallas team who ran on 45 per cent of plays – the seventh-highest rate in the NFL.

Pollard had nine rushing touchdowns and added a further three receiving scores from 39 catches for 371 yards.

In the Wild Card win over the Tampa Bay Buccaneers, Pollard ran for 77 yards at an average of 5.1, well ahead of team-mate Ezekiel Elliott's 2.1 yards per carry.

Elliott, who had a comparatively difficult season, could not carry the load in Pollard's absence in San Francisco, finishing with the same number of yards from scrimmage (33) as the injured star despite playing the full game.

Quarterback Dak Prescott acknowledged afterwards Pollard's injury "hurt us", but the first-time Pro Bowler must now hope the serious nature of the problem is not the source of more hurt.

Pollard will become an unrestricted free agent in March, at which point he will still be rehabilitating his left leg.

Barcelona have denied allegations claiming president Joan Laporta broke club rules when handing out the Camp Nou development contract.

The 'Espai Barca' project was first approved in April 2014, when club members voted in favour of the massive remodelling job that would develop Camp Nou and the surrounding areas.

A further referendum in April 2021 ratified the financial proposal that took the project's maximum budget to €1.5billion.

It will lead to the stadium's capacity increasing by 6,000 to 105,000 spectators plus the installation of a retractable roof, while 40,000 square metres of land is set to be improved.

An announcement earlier this month confirmed Turkish company Limak would be in charge of remodelling the stadium, but a report by Spanish digital newspaper El Confidencial claimed on Monday the club's bidding process for the contract should have excluded the business in question.

According to El Confidencial, Limak should have been ineligible because it allegedly could not provide evidence of building a stadium with more than 40,000 capacity in the past 10 years and did not present two references of buildings constructed in Spain for greater than €150m over the same period.

The publication suggested the alleged oversight put Barca's building licence with the local council at risk, but the club insists the accusations are inaccurate, pointing to a "new tender process" dated from September 1, 2022.

A long statement began: "Barcelona wants to refute the story published today, Monday, January 23, 2023 in El Confidencial titled: 'Laporta broke the Barca rules to award the Camp Nou work to the Turkish company Limak'."

The letter highlighted five specific sections of the report followed by "FALSE" and an explanation, with most points coming back to Barca highlighting the start of a new tender process in September.

"The bid specifications for the restructuring work on Camp Nou were announced to all the companies that submitted bids and were effective date from September 1, 2022," the statement continued. "The terms and conditions set forth therein established no requirement for bidding companies to have built a football stadium with more than 40,000 seats or two constructions in Spain.

"Prior to this bidding process, there was a process that commenced in 2017, and which was cancelled in December 2020 by means of an official communication on the Barcelona supplier portal to all participating companies at that time.

"It was not until September 2022 when the new bidding process began, the outcome of which was for the project to be awarded to LIMAK as the best rated company.  

"There was no breach of the terms and conditions as these were associated to the new tender process, which is dated from September 1, 2022."

It added: "As we have set out previously, the document [that El Confidencial claimed to have seen] referred to is for the pre-qualification that began in 2017, and in no way corresponds to the requisites in the conditions laid down on September 1, 2022.

"The process of obtaining a building licence from Barcelona City Council is totally independent of the adjudication process for the company to carry out the construction.

"In no way is the building licence at risk because the name on the licence is that of Barcelona as the initiator of the construction, not the construction company."

Ben Shelton is juggling revision for exams with his hopes of going all the way at the Australian Open.

Shelton beat fellow American J.J. Wolf to set up a quarter-final tie with Tommy Paul – another compatriot – in Melbourne.

The 20-year-old is the lowest-ranked American player to reach a grand slam quarter-final since Todd Martin at the US Open 2000 and the lowest at the Australian Open since Michael Chang in 1996.

This trip Down Under is Shelton's first venture outside the United States, and while focusing on his budding tennis career, he is also taking a general business degree, learning via online classes.

"No exams yet, so it's going to get interesting when my exam dates might conflict with some of my matches," Shelton quipped. "A few assignments here and there. Pretty easy stuff.

"I'm taking classes at a bit slower pace than I was when I was full time in school. I don't have too difficult of a workload.

"It's very manageable while I'm playing tennis. So far in January I haven't had any problems or conflicts.

"I really want to get my degree. It's something that's important to me. That's something that I'm going to stick to and continue to do."

Shelton is one of three American players to have reached the quarters – the others Paul and Sebastian Korda.

It is the first time since the 2005 US Open that three American male players have reached the last eight at a major. It is the first time it has happened in Melbourne since 2000.

"It's definitely a surprise. I got on the plane with no expectations," Shelton said.

"I know that it's very hard to adjust to Australia from the United States just with the jet lag, time change and everything.

"It being my first time, never being out of the United States, I knew it would be a struggle.

"I think it has helped me a little bit, not having that expectation or the feeling that I have to perform, but being able to just go out there, be myself and play free. I think that's been a big contribution to my success.

"Each match that I've won here has felt the same. It's a mixture of joy, relief. I just have that feeling of ecstasy. When the last ball lands, I did it. To be able to do that on this stage four times in a row, that feeling over and over again, has been pretty cool."

Francesco Bagnaia confirmed he will be the first MotoGP champion in a decade to take the number one for the forthcoming season.

The 26-year-old will defend his crown in the 2023 season and becomes the first rider since Casey Stoner in 2012 to adorn the number on the front of his bike.

Rules allow for a defending champion to use the number, but it has largely been overlooked, with only four riders in MotoGP history taking up the honour.

Joan Mir and Fabio Quartararo both elected not to take the number after their successes in the past two years, but the Ducati Lenovo Team star announced his plans to buck the trend.

"I decided to have both there and the 63 is still on my helmet. But it's been a long time since we last saw the number one in MotoGP," he said at the Campioni in Pista event.

"I've always admired people racing with the number one. I've always loved it. Respecting the fact that you are world champion is right.

"Number one represents who you are, it represents your identity as world champion. So, it's important for me to pay tribute to other world champions.

"Sixty-three will always be my number, I'll always have this number on my bike, but hopefully together with the number one."

The new MotoGP season begins on March 26 in Portugal, with pre-season testing to begin in Singapore next month.

Frank Lampard has been sacked by Everton under a year after taking charge of the Premier League strugglers.

Lampard was appointed as Rafael Benitez's successor on January 31, 2022, but less than 12 months later Everton are now on the search for yet another manager.

The former Chelsea boss managed to keep Everton in the top flight last season, with a dramatic 3-2 comeback over Crystal Palace in their penultimate match proving enough.

Yet Everton's struggles have carried over into this campaign and, with 20 games played, they sit 19th on 15 points following a 2-0 defeat to fellow strugglers West Ham on Saturday. They have lost eight of their last nine matches in all competitions.

Lampard's dismissal was confirmed on Monday. Everton's next manager will be their seventh permanent appointment since Farhad Moshiri, who was in attendance at London Stadium, invested into the club in 2016.

After Saturday's game, Moshiri told Sky Sports a decision on Lampard's future did not rest in his hands, a statement that will only have fuelled more anger in a fanbase already protesting about the way in which the club has been run.

Lampard's record is poor. He has won only nine of his 38 Premier League matches, meaning his win percentage (23.7) is better than only that of Mike Walker (19.4) when it comes to Everton managers to have overseen at least 10 games in the competition.

However, Everton have also been hamstrung by financial difficulties caused by previous misspending.

Last season's top scorer Richarlison was sold to Tottenham in June of last year to appease Premier League profit and loss regulations, and the void left in the side has been clear, especially with Dominic Calvert-Lewin's injury issues.

Lampard's team have also struggled in defence, leaking 59 goals across his league matches in charge over the past 12 months.

This season, only Fulham (36.1) have a higher expected goals against (xGA) figure than Everton (34.2) in the top flight, suggesting they have been fortunate not to concede more tha than the 28 goals they have shipped.

Everton have not made a signing in January, but are reportedly close to confirming the loan acquisition of Villarreal forward Arnaut Danjuma.

Julian Nagelsmann dismissed any suggestion that Thomas Muller's omission against RB Leipzig hints that the forward's Bayern Munich future is uncertain.

Muller came on in the 83rd minute as Bayern drew 1-1 with Leipzig on Friday.

The 33-year-old has struggled with injuries this season and has played only nine Bundesliga games.

Muller also failed to spark at the World Cup, as Germany crashed out in the group stage.

Nagelsmann, though, says the media has made too much of Muller being a substitute.

"With Thomas, this is a bigger topic in public than it is for us," he told reporters ahead of Tuesday's clash with Koln.

"When you've been injured for so long, you're always challenging [for your place].

"Thomas also wants the competition. He has an outstanding character, but I haven't made up my mind about if he plays."

Muller could not get Bayern over the line against Leipzig, with the champions having struggled to create much in the way of opportunities in the second half at Red Bull Arena.

Eric Maxim Choupo-Moting put them ahead late in the first half, netting Bayern's 50th Bundesliga goal of the campaign, before Marcel Halstenberg equalised, but Nagelsmann wants more intensity in attack.

He said: "We didn't build up optimally, it was too slow. We sometimes had good actions after winning the ball, but we made wrong decisions.

"I also warned the team beforehand about Leipzig's strength in transition... There were one or two less-than-perfect situations on both sides."

Koln, on the other hand, go into Tuesday's game having thrashed Werder Bremen 7-1.

"I think the seven goals mean something more to Koln than to us," Nagelsmann said. "They do that very well, they're active and good at counter-pressing.

"[Coach] Steffen Baumgart does that very well. They always play with an open mind, very offensive. We have to be aggressive."

Novak Djokovic felt "fantastic" as he outclassed Alex de Minaur with his best performance of the year in the fourth round of the Australian Open.

The nine-time champion outclassed Australian De Minaur on Rod Laver Arena, winning 6-2 6-1 6-2 in two hours and six minutes on Monday.

A hamstring injury has been a concern for Djokovic as he bids to win a record-equalling 22nd grand slam title at Melbourne Park, but he was moving freely as he ruthlessly breezed into the quarter-finals.

The fourth seed from Serbia did not face a break point, delivering another returning masterclass and serving superbly to set up a meeting with Russian Andrey Rublev.

Djokovic has won 25 consecutive Australian Open matches – just one shy of Andre Agassi's record – and the 35-year-old rated his demolition of De Minaur as his most impressive of the year.

He said: "Definitely the best tennis I've played this year, this tournament, so far this season. Best match. I'm really glad because obviously as the tournament progresses, the matches are going to get tougher. I'm really glad to manage to win the way I did.

"To feel really great in terms of mobility and movement of my leg, which is great news. So all in all, perfect match for me."

Djokovic did not feel any pain as he brushed De Minaur aside to move into his 13th Australian Open quarter-final and the last eight of a major for the 54th time. 

He added: "We take it day by day. We do a lot of things. It's been honestly exhausting to be involved in a lot of different treatments and machines and stuff that we do.

"At the same time it was necessary. It is necessary in order to get myself in a condition to play. So I'm really glad that my body has responded really well.

"Tonight I didn't feel any pain. I moved as well as I have the whole tournament. It means we are progressing in the right direction.

"Some days you feel good; some days maybe not as. So, as I said on the court, I do not want to celebrate too early because I don't know how the body's going to respond tomorrow and for the next match. What I felt tonight is fantastic."

Antonio Conte is relaxed and content at Tottenham, shrugging off the suggestion he felt under pressure.

Spurs have lost their last two Premier League matches, going down 2-0 to Arsenal in the north London derby and 4-2 at Manchester City.

Those defeats have left Tottenham six points off the Champions League places, though they could close that gap by beating Fulham on Monday.

Conte has often bristled over Spurs' transfer dealings, but he claimed he is not feeling any pressure at the club, though he hinted if Tottenham's hierarchy are unhappy, then they must make a change.

"The club put pressure on me to make progress? I am here and you can see the club see every day my work, what I do with my staff and I have zero problem," Conte said in a press conference.

"I have zero problem with this aspect. I am really, really relaxed about this aspect because I know my work here, but also I think on the pitch you can see my work every day and this is my last problem.

"I have zero, zero problems. If the club is happy, I'm happy. If the club is unhappy, I am sorry, it means that I am not so good for them."

Spurs bolstered Conte's squad ahead of the season but are yet to make any additions in January.

However, Chelsea, one of the teams who might well be challenging Spurs for a European spot this season, have spent big this month.

It was put to Conte that his old team's huge expenditure is making it even harder to bring players to Tottenham, but the Italian reiterated his desire for someone above him at the club to discuss the transfer strategy.

"I don't want to go into this situation because I have a lot of headaches," he said.

"I think that at the end of the transfer market, probably the club will explain our transfer market, [like] I asked last time, our vision, the way that we are at this moment.

"I think it'll be good also to have another person to explain to you, otherwise in this type of question the risk to cross a line is easy.

"Now we have to try to be focused, continue to improve, to continue to work."

Additional issues have been caused at Spurs by their sporting director, Fabio Paratici, having been handed a long ban from Italian football.

Paratici has been punished due to Juventus' financial irregularities during his time at the club.

The decision whether to expand his suspension across other leagues and competitions now lies with FIFA.

Andrey Rublev suggested he had given up hope at 5-0 down in the deciding tie-break against Holger Rune.

Rublev prevailed 6-3 3-6 6-3 4-6 7-6 (11-9) in a three-and-a-half-hour thriller against the Dane on Monday to progress to the quarter-finals of the Australian Open.

The Russian salvaged two match points to force a tie-break at the end of the fifth set, but found himself staring down the barrel of an exit from the season's first major as Rune cruised into a commanding lead.

Yet Rublev won nine of the next 11 points and, at the third attempt, sealed a remarkable victory when a shot that hit the net cord trickled just over.

"Yes, I was lucky," Rublev said in his post-match press conference.

"I started to think it's over, for sure. Somehow... I was able to start to play with much more focus."

Asked how he maintained his self-belief, Rublev quipped: "I was not believing."

"Beginning of the fifth set, I was completely frozen. Inside I was thinking that I cannot [win]. I cannot move. I cannot hit.

"I was thinking it's over. He's playing much better than me. He deserves to win. He's going for the shots. He's doing something that normally I am supposed to do if I want to win the match.

"I let it go. Somehow the stress that I had, I was able to relieve it. At the end of the match I played much better than during the rest of the match."

During his on-court interview, Rublev said: "I was never able to win matches like this, this is the first time I've won something like this.

"At a very special tournament, to be in a quarter-final, it's something I'll remember all my life. I'm shaking!"

Rublev has qualified for his second Australian Open quarter-final, and his seventh at a grand slam. However, he has lost all of those matches.

The world number six, seeded fifth in Melbourne, has won three successive matches that have gone the distance, a career-first. Now, he will meet nine-time champion Novak Djokovic, who defeated Alex de Minaur in straight sets.

"I don't know," Rublev replied when asked if Djokovic was unbeatable. 

"Novak is very tough player to beat, especially in the slams.

"He has the best experience to win these matches. He's one of the best in history. The only chance I have is if I play my best tennis, just fight for every ball, and that's it. That's the only chance."

Pablo Barrios signed a new deal with Atletico Madrid running until 2028 and has been promoted to the senior squad.

The 19-year-old made his LaLiga debut off the bench in a 3-2 defeat to Cadiz in October before featuring in the final Champions League group-stage match against Porto just a few days later.

Since the mid-season pause for the World Cup, Barrios has made an impression in Diego Simeone's side with goals in the Copa del Rey victories against Arenteiro and Real Oviedo.

The teenager earned a first LaLiga start in last month's 2-0 victory over Elche and was named in the starting line-up for the 1-0 defeat to Barcelona on January 8.

In total, Barrios has featured in six of Atletico's seven games across all competitions since the World Cup, four of which have come as a starter.

Barrios joined Atletico's academy in 2018 from rivals Real Madrid.

Stefano Pioli expressed confidence that his Milan side can respond against Lazio following a disappointing sequence of results.

The defending Serie A champions have endured back-to-back 2-2 draws in the league against Roma and Lecce to leave them 12 points behind leaders Napoli, albeit with a game in hand.

Pioli's side also suffered a Coppa Italia defeat to Torino and lost the Supercoppa against rivals Inter in Saudi Arabia, resulting in a four-match winless streak in all competitions.

Milan are looking to return to winning ways on Tuesday when they travel to face Lazio, and Pioli is confident the team will respond in a positive manner.

"We have to face these moments, it will be another exam to overcome with humility and unity," he said at a press conference.

"Criticism is there, because the performances have been below our possibilities and the expectations, which, being Milan, are very high, we have strong roots.

"There have been experiences with lightness and good humour, now we need compactness and the will to react. My players are not bad, they deserve my trust and respect.

"We needed to reset. The situations to improve are tactical, technical and mental. The most important aspect is the mental one.

"It's good to remember how we managed to win last year in Rome, going through difficulties, but maintaining balance and focus until winning the game at the end.

"When you coach such a strong team, it's normal that my expectations are also aimed at a maximum performance and result.

"From the missed victory against Roma to the derby, we had to do more. Now we have two options: either to continue feeling sorry for ourselves or to react. I'm sure it's the latter."

Courtney Lawes and George McGuigan have both been forced to withdraw from England's training squad for the Six Nations.

Vice-captain Lawes suffered a calf injury playing for Northampton Saints against La Rochelle in the Champions Cup on Saturday, while McGuigan has sustained a knee issue.

New coach Steve Borthwick has already lost Luke Cowan-Dickie to an ankle injury, with the hooker certain to miss at least the start of the tournament, while Jamie George suffered a concussion playing for Saracens in the Champions Cup on Sunday.

Tom Dunn and David Ribbans have been called up in place of Lawes and McGuigan.

England's Six Nations campaign begins against Scotland at Twickenham on February 4.