Can't help thinking Chamberlain is a "live dog" here - for me he's been in with the better opposition, proved he's durable & has taken himself away to Miami to get proper sparring ahead of this bout.
Been in with Usyk & Wilder (sparring) only downside is he's the "away" fighter.
Either way, I think he's worth a play & available at 2/1 for the outright win at Quinnbet & for those more daring 7/2 for points or technical decision at a whole host of bookmakers.