Ole Gunnar Solksjaer has an abundance of centre-backs to choose from after Harry Maguire arrived from Leciester City in an £80million deal in the summer.
Everton’s move for the Argentine international fell through on deadline day but Fenerbahce and AC Milan are two of the clubs said to be still interested in the player.
United are keen to get Rojo off the wage bill on a loan deal before the September 2 deadline, with an obligation to buy the player.
The United manager conceded that he has a surplus of centre-backs at his disposal.
“That will be for us to work out, and of course I do have too many centre-backs to keep everyone happy,” Solskjaer said.
“But we need to win games, we need to perform, so we’re going to pick the players that will give us the biggest chance to win games. They’re all quality centre-backs and I know that we will need quite a few of them.
“Of course, Eric’s injury means that at the moment I’ve got six fit ones, which is maybe one too many to keep everyone involved.
“But then that’s our jobs, to make the most of what we have now, and for them as well to make sure every day in training.
“And when they get the chance, because they will – we’ve got loads of games, play well when you get it. All of these, Marcos, Phil, Chris… they’ve been here for a long time and they’ve proven that they can do it.”