The France international is likely to be out longer than was first thought, with a return now pencilled in for December at the earliest.
Solskjaer said, “Fred will probably take Paul's position for a while now and that's been brilliant for us. But Andreas Pereira has grown in the last few games. His energy and running, chasing, he is a different sort of 10.
“I think his energy and drive – both Brazilians to be fair – are going to be important for us. Scott McTominay was excellent, but Scotty is a different player.
“He can play also in the central positions, so I am delighted with him."