Four players offered new contracts at Chelsea but who will sign them?

Andre Villas Boas confirmed in his press conference yesterday that there are deals offered and on the table for four of our first team players who's contracts are due to expire at the end of this season.

Jose Bosingwa, Nicolas Anelka, Didier Drogba and Salomon Kalou have all had offers made to them by the club to extend their time here but I am just wondering who would sign an extended deal.