Jose's explained it a number of times now. He's definitely going to sign a replacement for Carrick, which IMHO could be someone like Ruben Neves. Someone who dictates play, has vision, good passer. If Fellaini leaves, he needs a replacement for him. That could be someone like SMS. A physically strong CM who likes to bomb forward. Someone who could compete with Pogba for a spot really. It's not about signing a back-up for Matic or whoever. It's about having different types of midfielders and having the depth of squad needed to last the season. After we sign someone they'll get the chance to battle it out with the others in training and pre-season to decide who makes the first eleven and who doesn't. Right now there's no real competition in midfield. Pogba, Matic and Herrera are almost guaranteed to start when fit. Right now if Pogba isn't up for it Mou almost can't afford to drop him because who's going to replace him? McTominay can't, he's a different type of midfielder and nowhere near as good. Fellaini isn't good enough and is likely to leave. So what options does Mourinho have when one of our midfielders doesn't turn up really? He dropped Pogba when he wassn't performing but our game suffered because of it. It was a risky move from Mourinho, and it shouldn't be like that. It's the same with our fullbacks as well.