I'm not a fan of any of the remaining free agent centers (including Bozak, at the prices reported). With Lecavalier off the market, they may as well just roll with Kadri-Grabbo-Bolland-McClement and hope that Grabovski rebounds. And if he doesn't, buy him out next summer. Roy, Weiss, Ribeiro, etc. are all flawed players that will be overpriced, and not really bring us anything that we don't already have in our group of centers.
Of course, if something good comes up on the trade market, that'll do too.