I think, Juventus coach has selected a new talented players the fans has been waiting to see in the team for them to believe that Juventus are fully prepared to win next season title. Now that Juventus president has signed in mane and Paul Pogba into the team, I think it will really help the team to improve their performance in this season because all those players are very good in the areas of achieving victory from any competitions. AC Milan coach don't want to miss it in this season by using this opportunity to sign in young talented strikers and midfielders that will help the team to perform well through out of the tournament to make their fans happy again.
You mentioned Juventus signed Mane. I only see a list of players who have signed for Juventus this summer, including Pogba, Di Maria, Vlahovic who are signings who are considered to be making a big contribution to the Juventus team next season. Juventus in addition to releasing several important players in their squad such as Paulo Dybala because the contract was not renewed by Juventus and also Matthijs de Ligt who is reportedly ogled by European giants such as Chelsea and Bayern Munich.