not at age 42/43. the discrepancy is too much. he struggled with unskilled charr in his late 30s if I recall correctly. even wilder will give him even stevens at this stage.
He would school Wilder. Vitali didn't struggle at all with Charr... TKO4, after knocking him down in the second round. And Vitali was aged 41 when they fought :good
If a KD in rd 2 and a TKO4 is struggling......then Haye went life and death with Valuev and Klitschko.atsch
Of course... Vitali could still come back and mop the floor with the winner of Wilder/Stiverne and get his title back if he wanted to, but he's too busy with politics at the moment.