Parker is one of the "easiest" fights Usyk could have style wise. Parker is basically just a lesser version of Usyk. A smaller guy who relies on skill rather than freakish physical abilities. I'm not saying this to diminish Parker. I just think somebody who's massive or packs 1 punch KO power is much riskier for Usyk.
Zhang would pose little threat to Usyk. If Parker can dominate the rounds vs Zhang than Usyk will cruise to a UD.
He would pose little threat, but he at least might catch Usyk with something and give him something to think about. Parker wouldn't.
I'd rather see Jai Opetaia in the ring with him, i like Joe, but Jai being another southpaw would make it more interesting, as Jai has exceptional hand speed. Cant seeing anyone beating Usyk currently.
Usyk-Parker would be one of those few fights where Usyk could fight him (and win comfortably), and then fight someone else same night. That's how convincingly and 'comfortably' Usyk beats Parker. OP DKSAB. Seriously.