The Nigerian striker made his debut for United as a substitute in Monday's win over Chelsea.
Asked if Ighalo could start the Europa League last-32 first leg, Solskjaer replied: "Well I'm not going to tell the team today, but we're going to have to rotate with all the games we've got coming up and yeah, he's one of them that could start. We've not 100 per cent decided yet."
Pushed on what Ighalo's role in the team would be, the Norwegian added: "Well for me Odion is a different type of striker for us. He's a box striker, he's a goalscorer.
"We've already seen in training he really knows his craft, he knows how to play as a centre forward and he's a fantastic professional and human being and he's already added to the squad.
"The boys have learned his song already, so they've taken to him, so I hope he's going to sharpen up quickly, because we know he's been out of season and he needs to do a little bit extra after training most of the time and we try to give him as much game time as possible.
"Unfortunately he didn't score against Chelsea, he had a good chance, that would have been a good start, but I'm sure he will take his chances."