Tasci is a very good player, and to get hi on a free will be a big bargain for us. He is one of the defenders that is vying for the spot in the national team, and has already won a league title and was a key player 3 years ago when he was still coming through. He is a good passer of the ball and a clean tackler, he will probably play behind Chiellini cleaning up. Chiellini will attack everything, and any left overs, Tasci will clean up and pass. His passing is really good, one of his best assets i think.
I think all the team really needs now is to bring back Criscito and sign a new right back. If that Tasci deal for 2010 is true, then that's a great deal as well.
In terms of new right backs, I've heard good things about Di Silvestri from Lazio. I don't think he would cost too much, so I think we have enough money left to sign him.