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Manchester United legend Rio Ferdinand fears Alexis Sanchez may never recapture his Arsenal form in a Manchester United shirt.

Since joining Manchester United in January 2018, Sanchez has failed to live up to expectations at the club and Ferdinand fears age may be catching up to the 30-year-old forward.

Since replacing Jose Mourinho in December, Ole Gunnar Solskjaer has succeeded in improving the performances of a host of Manchester United players such as Victor Lindelof, Paul Pogba and Marcus Rashford but the performances of Sanchez is still yet to improve.

Ferdinand believes Solskjaer has done all he can for Sanchez.

“There are a lot of miles on the clock,” Ferdinand said.

“That’s one big thing, he has played a lot of games at the top level. There is no doubting he is a fantastic footballer, but at Man United, it just doesn’t seem to be working at the moment.

“Ole Gunnar Solskjaer has gone into Man United and got some players working, got some players playing. Lindelof looks a different player now. He is first on the team-sheet in that back four now. Pogba, the most influential players in the Premier League since Ole Gunnar Solskjaer went there, barring probably [Heung-min] Son at Tottenham.

“Marcus Rashford looks like the player that everyone believed he could be for United, but Sanchez he hasn’t been able to unlock that code yet, but you can’t expect a manager to go in an unlock every code on every player. He’s done what he can at the moment, but Sanchez is still searching for that form.”

Meanwhile, Sanchez is set for a lengthy spell on the sidelines after picking up an injury in the 3-2 win over Southampton on Saturday.

According to Chile’s national team physio, Pedro Onate, Sanchez could miss up to two months with knee ligament damage suffered on Saturday.

“We spoke to the player and he had scans on the injury (on Sunday),” Onate told El Mercurio.

“He will be available for the Copa America, but he will be unavailable to play for between six and eight weeks.

“The medial ligament strain is an annoying injury but not such a complex one.”