Noitora and tesla may be stopped from trying to kill ichigo or inoue, just not sure who may appear to stop them. Most likely though it's safe to say that it's either between tousen, since he's the commanding officer of all the arrancars in hueco mundo or one of the higher ranking espada who's number may get revealed by nell, since she seems to know all the espada's names and numbers as soon as she sees them. Plus, it seems the desert brothers period know all the espadas now that i think about it.
I would actually like to see Ulquiorra come out any minute now. I think now is a very good time... As for Ishida and Renji... I really hope they beat him and move on.
ANOTHER boring chapter.