Neither should be fighting imo. Both are old AF! Sad seeing old past it fighters still fighting.
Age isn't a problem. They have a good reason to make this fight happen and it won't happen if there's no agreement and consent from both parties.
It's a show match up so there's no need to worry.
I'm sure it will push through because they have a market, both fighters although retired still has a lot of fans these are old and new fans who want to see if both fighters have it after more than 2 decades of not fighting, I wish both fighters luck, I'm sure it's going to be fun and entertaining for everyone involved.