Manchester United boss Ole Gunnar Solskjaer expects several sales this summer.
Goalkeepers Sergio Romero and Joel Pereira are due to be released when their contracts expire at the end of June but Solskjaer is reluctant to let too many players leave.
"We're planning as we normally do," Solskjaer said of the upcoming window. "It's not like end of season, and let's see what we do, that's an ongoing process, looking at the squad, players who are going to stay, players who might be leaving.
"And, as I said a couple of times recently, I hope we're going to strengthen with two or three players we definitely need to challenge higher up in the table. We're still too behind to think it's just going to come by itself.
"We've had a few players on loan that might come back in, there is interest in a few others, maybe going out. But you want to come out of the transfer window strengthened and it might be we allow some players to go out and gain experience, come back stronger for it.
"Apart from that, it's difficult to say. I can't see too many outgoings."
