If Milan is so keen on garbage exchange, I'm all for it, as some players may reborn for a while. Cannavaro is a legendary exmaple.
Let's swap Grosso for Oddo and De Ceglie for Antonini and without any cash we have Antonini/Traore-Motta/Oddo, which is better than what we have now. Then we can invest in some Tremoulinas, as Traore and Motta are not ours anyway.