To be honest, there are so many exhibition fights that interest in them has decreased (I am speaking personally about myself, maybe everything is fine with the public's interest).
It is the same thing for me, but Mayweather managers are known for collecting huge amount of interest and money from sponsors, and they will do it again.
I am waiting to see what rules they are going to have for this event, this can be very important for selecting winner in this fight.
I respect Tyson for trying to recover financially after losing all his money in the past.