Exactly this. No one was raving about Baleba last season. There were many Brighton players receiving praise last season but I don't remember him being one.
Similar to Elliott Anderson now, he's having a good start to the season but I didn't hear him being brought up last season as one of the top players at Forest. He's doing really well now but United can't be throwing money at one season wonders.
After watching the last game against Brighton, Amorims comments on Mainoo fighting Bruno for a starting position 100% makes sense. Mainoo is coming on for Casemiro, trying to play the defensive position and is really struggling, he needs to be in the attacking third, as far as I remember that's where he has really shone.
If we want a quality proven DM I'd look at trying to sign Camavinga, then put in a cheap bid for Baleba in the hopes he can turn into a starter.