I'd rather see that rematch against Dillian Whyte or Ruiz, but I guess Wallin will be interesting enough.
Wouldn't mind a fight which isn't a rematch. Eg. Parker fights Whyte, then the winner fights Chisora, and then the winner of that fights Whyte or Parker again !
Whyte rematch I can understand the desire to reverse a loss and a win alongside the Chisora win would make it clear this is an improved Parker. But it's still a risky fight. Wilder and Ruiz would be good fights but PBC like to keep things in house I doubt either of these fights will happen next. Wallin seems to be the only real offer on the table right now and so I suspect this will be his next fight. I don't rate Wallin, he's big enough and durable enough to hang in there but I'm picking Parker to win a decision if it happens.