Brock Lesnar is expected to be in attendance tonight for UFC 168. Speculation is that he's interested in another fight, possibly against former pro wrestler and heavyweight veteran Josh Barnett--who will be fighting Travis Browne. Former UFC heavyweight Shane Carwin, who lost to Lesnar by second-round submission a few years ago, is also said to be interested in returning to the UFC given the right opponent and has singled-out Lesnar.