Manchester United have discussed the possibility of signing Max Aarons of Norwich City.

Aarons is a 20-year-old right-back who can also play on the left.

Norwich would like to keep Aarons at least until the summer as they are at the top of the Championship.

Isco has chosen to leave Real Madrid for Sevilla next summer for a few of between €15 million and €20 million.

Isco has started just three matches this season and is out of contract at Real Madrid in 2022.

Isco would prefer to leave in January, but the lack of depth for Real Madrid makes that an impossibility. 

Arsenal also showed interest in Isco.

Diego Costa and Atletico Madrid have terminated their contract by mutual consent.

Costa will be free to join a new club on a free transfer.

Diego Simeone said Costa had given "everything" to the club.

"He has given us a lot and we have given him a lot," Simeone told a news conference on Tuesday.

"He needs new challenges because he feels good, strong, in good form. I can only imagine that wherever he goes he will do well because he is a fighter.

"Diego has always given us everything, in a sporting and human sense. Let's hope he finds the right path and we can see each other again and give each other a hug."

Costa rejoined Atleti in January 2018 for €66 million after three-plus season with Chelsea. 

Lionel Messi said that he would like to play in the United States one day before eventually returning to Barcelona.

“I would like to play in the United States and experience life and the league there, but ultimately come back to Barcelona in some capacity. I’m not thinking too far ahead in the short term and just want to see how the season finishes," said Messi in an interview with AS.

Messi, who will be a free agent after this season, said he was happy at Barcelona after asking for a transfer last summer. 

Messi also named Pep Guardiola and Luis Enrique as the two best managers he's worked with.

“[Guardiola's] way of preparing games was exceptional and his way and the way of working that Luis Enrique worked too was excellent. I was fortunate to work with both men.”

Inter have made Christian Eriksen available for a transfer in the upcoming January window.

Eriksen has started just four matches under Antonio Conte this season.

Arsenal were reportedly offered a chance to sign Eriksen next month. 

Dominik Szoboszlai is set to sign a five-year contract with RB Leipzig as they will pay his €25 million release clause with Red Bull Salzburg.

Arsenal and AC Milan also had interest in signing Szoboszlai, who prefers to stay in the "Red Bull family" in January.

Szoboszlai has long been considered one of the best young talents in Europe but has had his breakthrough this season.

Manchester United doubts Real Madrid or Juventus can afford to pay a transfer fee for Paul Pogba.

Pogba's agent, Mino Raiola, has announced he intends to find a new club for him.

Pogba is under contract with United until 2022. Pogba's preference is to join Real Madrid. 

United are determined that they will not be bullied into accepting a low bid for Pogba, who was signed for £89.3 million from Juventus in 2016.

Agent Mino Raiola has said Paul Pogba's tenure with Manchester United "is over."

United triggered a one-year extension in Pogba's contract that keeps him under contract until 2022. Pogba wants to leave in January and won't commit his future to the club.

"It's over between Manchester United and Pogba," said Raiola in the interview released on Monday.

"No point beating around the bush, it's better to speak clearly, look forward and not waste time looking for people to blame: Paul is unhappy at Manchester United.

"He is unable to express himself as is expected from him. He needs a change of club; a change of scenery.

"He has a contract which runs out in a year and a half -- in the summer of 2022 -- but I believe the best solution for everyone is that he leaves in the next transfer window.

"Otherwise, United know well the risk of losing him for nothing, given at the moment the player has no intention of extending his contract. If someone doesn't understand this, they understand little or nothing about football.

"In any case, they can all blame me if next summer Paul leaves."

Real Madrid and Juventus have both shown interest in Pogba in the past.

Paris Saint-Germain are pursuing a potential signing of Lionel Messi.

Messi can begin negotiating a contract with another team in January.

"I cannot talk about it at the moment," PSG's president Nasser Al-Khelaifi said on Thursday when asked about Messi's future.

Messi has remained close with Neymar over the past few years.

Messi's wage bill will be one of the stumbling blocks for PSG, as he earns €60 million a year at Barcelona, much more than Neymar's €36 million a year or Kylian Mbappe's €20 million a year.

Neymar has publicly said he wants to play with Lionel Messi next season.

Messi is out of contract with Barcelona next summer and is free to negotiate a contract with another club beginning in January.

"What I want most of all is to play with Messi again, to be able to enjoy him once again on the pitch," Neymar said.

"He can play in my place, I have no problem with that! But I want to play with him next year, for sure. We have to do it next season."

PSG has been monitoring Messi's situation with interest in signing him. Manchester City was believed to be Messi's preferred club.