Definitely yes. But for that to happen Fury would have to come in with following another 3-6 months of non-boxing fitness training by BenDover, and be compacent. “Let’s go” has 3-4 rounds to chin him before his power dries up.
He's old, serving a ban for PEDS and hasn't had a win of note for an even longer time than Fury. So no, I don't think so. Is he a step up from the last guy? Weirdly, yes.
Briggs is a step up from Seferi but never getting sanctioned by the BBBoC. Practically 50 years old, inactive for over 2 years and his most recent win against a 'name' opponent was Ray Mercer in 2005... another circus freak show if it's made