Dalton Kincaid is the x-factor - I think he's the guy that steps up in this situation, particularly if the middle of the field is an option and McD hasn't yet burned the timeouts on defense. I also would like to see Cook involved more in the passing game in these situations as a checkdown rather than Allen default to running.
I just don't trust Coleman to make a play in these situations. Oddly Dawson Knox, for all the times early in the game that he has hands of stone, often steps up late in the game.