Solskjaer was also full of praise for deputy goalkeeper Sergio Romero, with the Argentina worldwide having excelled when given an opportunity in the domestic cup competitions this season.
"He's coming back on Sunday", Solskjaer said of Sanchez.
The striker joins a list of Manchester United players on the sidelines. Solskjaer may be tempted to freshen things up in defence though so Eric Bailly could replace Chris Smalling alongside Victor Lindelof in the middle of the back four.
Antonio Valencia and Matteo Darmain are also expected to miss out due to injury and illness, respectively.
New customer offer. Place 5 x €/£10 or more bets to receive €/£20 in free bets. Min odds 1/2 (1.5).
"They've been training better this week so Jesse [Lingard] and Ander [Herrera] have been training".
Attack: Man Utd's options in attack could be boosted by the return of Jesse Lingard as he's taken part in training this week after recovering from a hamstring injury that's kept him out since the Liverpool game. Solskjaer confirmed that Lukaku has a foot injury at the moment, but his comments suggest the injury might not be as bad as first feared.
The Belgian star has been undergoing treatment at United's training base Carrington but he is likely to sit out of the game. It is believed the midfielder will be able to play along with Anthony Martial, who is fully fit.
"He's been seeing his people in Barcelona so he's still a few weeks away, so if we get to round about Everton, City, Chelsea, that period, he probably will be available".