If the fight is scripted it will just be that Mike Tyson will receive a few punches as well but Mike Tyson won't give up losing the fight for money sake.
I take an example:
The strength and physique of the old man is not as strong as that of the young, although the old man was once a legendary boxing athlete, that is the key.
I've seen Maradona play with his students at their training ground, Maradona admitted he was old and tired quickly before he died at that time.
I think the same thing will happen with Tyson and Logan in the ring later, this is not a reputation or boxing legend, if Tyson loses, this is purely Tyson's age and physique at this time, already weakened.