Mancini was axed before the start of the season by the Nerazzurri.
"Inter, it's a shame it's over. We parted well but I do not accept that we talked about it during summer training," said Mancini.
"Juve will win again the league title, only Zlatan Ibrahimovic and Yaya Touré could change things."
"He's the only one in which I recognize myself, I would have wanted to train him. It's a shame he's going to quit."