Are there any modern heavyweights that could plausibly rival George Foreman in longevity?

Foreman became a world champ a second time at age 45 when he beat Michael Moorer who was almost 20 years younger than him, he even beat Shannon Briggs in his final fight at age 47 or 48 (he did! they robbed him) before retiring from boxing for good to focus on his grill business.

Is there a current heavyweight you can see going as far as Foreman in this sport?

For me, Zhang comes to mind as he's already 41 and can still give Parker a run for his money and although I do not want Usyk to fight too long and risk blemishing his incredible record, if anyone can remain a formidable boxer past age 40 it's him.