Im in two minds. If he is a Naybet type, then yes - big improvement for the short term.
However, adjusting to this league at his age? Well thats a massive "IF" for me, who is to say if he will or wont? But the odds have to lean more toward "wont"... IMO
Im actually kind of happy for him.
I think the EPL takes its toll on him, his injury record is testament to that, and I think Italy (particularly the Milan clubs) are excellent at nurturing older players.
He might have a year or two top level over here, over there could be four or five.