If we can manage it, yes. Cuomo has certainly shown that he doesn’t regard pre-nomination promises as binding (see, Working Families Party), so it’s hard to see how striking a deal would help.
And it really depends on whether we can find someone with heft – i.e, preferably someone who’s won statewide office, someone who can raise the money it’ll take, and who doesn’t have any massive skeletons in their closet – who’s willing to take a run at him.