No Reeves in Consantine 2?

Keanu Reeves is out doing promotional work for his upcoming film Street Kings. Makes sense to do some publicity for a big film you've got coming out. But while talking to IESB, Reeves mentioned somewhat dire news for fans of the actually solid Constantine film: there most likely won't be a sequel. Director Francis Lawrence hinted that a sequel would depend on a script (and why wouldn't it), but Reeves mentioned that he probably wouldn't be so inclined to be in the sequel. So I guess we'll have to wait and see. Consantine 2 a no-go?