Chambers would have a pretty good shot. But he himself is likely skeptical of his odds seeing as how Chambers pulled out of the Chambers-Thompson eliminator with an injury but never rescheduled the fight. I'd also give Chris Arreola a shot since Thompson is not as mobile as others who have beaten Arreola. It would come down to Arreola's ability to endure TT's punches.
Of course Thompson is America's best heavyweight boxer. Notice that Wilder is extremely afraid of Thompson and has already refused to fight him. Wilder will only fight winos from the alley!