lol of course he'll fight bisping, i'm sure he'll fight franklin again too.. bisping has no chance against him that's why he wants the fight.
He'll fight Bisping, because Bisping is a huge draw, and a title fight in London will be huge for Silva, Bisping and the UFC.
He doesn't want to fight Weidman for the same reason no one wants to fight every other loud mouth who gets one good knockout, and suddenly thinks they are the best.