After reading this thread I decided to check their forum for myself and wow, what a mistake. The vitriol, you'd think they are our immediate city rivals and that we have committed several atrocities against them. So odd.
Even in their Evra thread you find posts like "I hope at the end of his time here he's more of a juventino than a supporter of a shite club like united" that post received a reply like "off course he will. we are a loyal club which actually loves this sport and our players. He's so awesome that he makes me forget he used to play for them".
What have we ever done to juventus(aside from 1999)? Such a weird reaction to selling a player. Its not like Pogba was their local youth product who suddenly "betrayed" them or something, this is just a normal transfers one from which they make a lot of moneys and their team is in a good space. I'm struggling to understand their hate/reaction.