Dude, I don't think Bremer price will be around €50m - €60m. His current market value is €50m, I guess Juventus must expect more than €70m. He is still 26 years old and he is the main defender of Juventus. Juventus must only accept the offer if it is quite interesting, so Man United must be ready to spend a lot of money.
However, I still believe that Bremer will prefer to stay in Juventus. Moreover if Juventus sign a good coach for the next season. There is a rumor that Conte will return to Juventus. If it is true, I'm not sure if Bremer will leave Juventus to Man United.
Antonio Conte would either move to Ac Milan or Juventus, since he wouldn't be appointed by Bayern Munich after saying they're his appeal club to manage. For Juventus, they've also had negotiated with Thiago Motta over a contract with Juventus, it does seem like they want to part ways with Allegri Max.
He is worth that figure, I've watched him play, good with the ball, calm, leadership skills are great and would do a great combination with a defender like Lisandro Martinez. Lisandro Martinez is the pillar of Manchester United defense and since he got Injured Erik Ten Hag tactics has failed sikce he builds best from the back and it has to be done majorly by Lisandro Martinez.
For Manchester United, I'd want to see Harry Maguire leave to be fucking honest because he lacks pace in this modern day football. Jonny Evans also should be amongst the names leaving because he has been only on loan.