Arsenal forward Sanchez is set to arrive at Old Trafford in the coming days in a deal that will see Henrikh Mkhitaryan move to north London.
Marcos Rojo and David de Gea's current contract at Manchester United will run down in 2019. The goalkeeper has the option of further extending it by a year.
Manchester United are letting Zlatan Ibrahimovic take control of his latest recovery from a knee problem as his return date looks set to be pushed back.
De Gea, 27, has 18 months left on his £200,000-a-week United deal, although the club have the option of extending it by a further 12 months.
Valencia have stepped up negotiations to sign Matteo Darmian from Manchester United before the end of the current January transfer window.
Alexis Sanchez has less than six months left on his contract at Arsenal. They are ready to sanction his sale in January, with Manchester United likely to be his next destination.
Marouane Fellaini has already rejected an initial offer from Manchester United to sign a new deal. He is now waiting for a second offer from the Red Devils.
Manchester United appointed Jose Mourinho as their manager in the summer of 2016. He won the EFL Cup and the Europa League in his debut season.
Luke Shaw has paid tribute to Manchester United boss Luke Shaw following reports the club are no longer looking for a left-back.
Jose Mourinho would "happily" swap Henrikh Mkhitaryan for Arsenal's Alexis Sanchez, according to former Manchester United captain Gary Neville.
Paul Pogba registered two assists as Antonio Valencia, Anthony Martial and Romelu Lukaku's goals helped Manchester United beat Stoke City on 15 January.
Alexis Sanchez is expected to be Manchester United's first January signing after neigbours Manchester City decided to end their interest in the Chilean international.
Manchester United manager Jose Mourinho says Anthony Martial is "not ready" for Stoke match but hopes he can play after injury sustained at Dubai training camp.
Jose Mourinho insists Zlatan Ibrahimovic still has a role to play for Manchester United despite him being ruled out until February.
Jose Mourinho is hopeful that the Manchester United board will renew David de Gea's contract with a lucrative new deal to keep him at the club for a long time.
Lucas, 25, revealed that he is not part of PSG coach Unai Emery's plans for the future and admitted that he is keen to play in England.
Armenia international Mkhitaryan, 28, has also been linked with moves to Inter Milan and former club Borussia Dortmund.
United boss Jose Mourinho has urged the club's hierarchy to meet Juventus's asking price for the Brazil international.
Both Mesut Ozil and Alexis Sanchez are in the final six months of their respective contracts at the Emirates Stadium.
Arsenal are closing in on a deal for Bordeaux's Malcom which could be a major boost for Manchester United in their pursuit of Alexis Sanchez.
Manchester United want to make David de Gea their highest paid player to ward off interest from Real Madrid.
Manchester United have expressed interest in signing both of Arsenal's contract rebels Mesut Ozil and Alexis Sanchez.