So assuming we sign Ugarte, I kind of look at our squad and best 11 as a main group of 17 players.
Goalkeeper obviously different as you don't need to rotate, but for the others, I'd guess our starting 11s for the majority of games will be these choices depending on fitness and form
Fullback - 2 of Dalot, Mazraoui, Shaw
Center back - 2 of De Ligt, Martinez, Yoro
Deep midfield - 2 of Ugarte, Casemiro, Mainoo
Wings - 2 of Garnacho, Rashford, Amad (or Mount)
#9 & #10 - 2 of Bruno, Mount, Zirkzee and Hojlund
Basically every grouping has some competition where they should rotate and push each other on. Obviously I'd expect someone like Bruno to play every game regardless, but we have the people to rotate or bring off the bench now, cover for injuries and there really can't be any depth issues right now. Then you still have that group of players who are probably seen as deeper depth (Maguire, Malacia, McTominay, Antony) who fill out a "2nd 11" and then the guys beyond that are just extra bloat really.
Just glad we did such a complete window and addressed these issues we've had for so long for once. Hopefully we sort out the exits a bit and then it'll be the perfect window.