Manchester United crashed out of the Champions League on Tuesday after after slipping to a 2-1 defeat at home to Sevilla.
Wissam Ben Yedder’s quick-fire double handed Sevilla a huge advantage, while Romelu Lukaku’s late strike was not enough to spark a comeback from Jose Mourinho’s side.
Sanchez, meanwhile, endured another frustrating evening at Old Trafford and struggled to make an impact in United’s attack.
The Chilean has failed to find his best form since his move from Arsenal in the January transfer window and Ferdinand says the forward ‘looks like a stranger’ at United.
‘Sanchez, for one, he just looks a shadow of the player he was.
‘When he was at Arsenal, he was the player everyone looked to for inspiration.
‘He just looks like a stranger now.
‘When you go to a new team and play, you don’t lose all your talent.
‘That’s what it just seems like at the moment, and in some ways I just feel sorry for him.
‘It’s not going for him and it’s not going for other players as well.
‘That’s the way it’s going for them all, the whole lot of them, they were shocking.’