The 33-year-old signed a two-year deal with the Red Devils on deadline day but he was unable to make his debut against Newcastle on Saturday as he was forced into a fortnight isolation due to Covid-19 protocols.
Cavani had been hoping to feature against former club Paris Saint-Germain on Tuesday but he was left out of United’s travelling party, meaning he’ll be targeting Saturday’s game against Chelsea for his first appearance.
The Uruguayan last played in March and Solskjaer says there are certain hurdles he must overcome before he can make his debut.
‘He’s naturally fit,’ said Solskjaer.
‘He is fit enough but he needs to play football with the rest of the players and be in those kinds of situations.
‘Of course, you can’t live on memory, really, because it’a been a while. He’s very thorough, professional and he knows what he needs and what he wants. He still hasn’t ticked all the boxes before he’s available to play.’
Alex Telles is in line to make his debut for the club given Harry Maguire and Eric Bailly are unavailable, with Solskjaer considering a back three in the French capital.