Fernandes was named on the bench in a much-changed side in Belgium - but with Solskjær knowing he can’t take any chances in the second leg, the January signing is expected to start at Old Trafford.
"We feel we've added some X-factor and quality with Bruno, definitely,” said the United manager. “The addition of Bruno gives us that little bit of different flavour. He's a player who likes to play penetrative, forward passes, likes to take risks, which a Man United player should do.
“His imagination or his overview and his picture is a couple of seconds ahead of many players, and that's one of his strengths, knowing what to do when he gets it. He can change his mind in a split second, if that picture doesn't work he'll change it and that composure has been important as well for us.”
Solskjær added: “I think Bruno will only improve by coming here to a stronger league, stronger opponents and stronger teammates, getting used to us. We want to develop that X-factor. He’s come in and impressed everyone but we don’t want to put a limit on what he can do."
Possible United XI: De Gea; Wan-Bissaka, Lindelof, Maguire, Shaw; McTominay, Fred; Greenwood, Fernandes, James; Martial