Neville insists Mourinho has work to do to fix problems caused by 'bad spending' since Sir Alex Ferguson's retirement.
Neville said: "He's unravelling what's gone on here in the last three years with what I think has been bad spending by the club, simple as that. Now he is trying to correct it.
"I do like two or three players that he has signed this time. I like Pogba, he will come good, I like the fact Zlatan's got a big character, I like Bailly.
"I think there are players there that have got the profile that fit the Manchester United stature but there are still some here that haven't got the profile."