Stiverne would knock Mansour out.... easy money. Id favor Arreola over him as well, probably by late TKO or UD.
This ATG of the US penal system is a real threat. Very intelligent fighter who is being ducked by all in the USA. He will be allowed to fight abroad soon which will be the making of him.
He would massacre Arreola, Cunningham, Stiverne, Adamek, etc. All small heavyweaights would get killed. I'd favor him over Fury, even fight with Price and Povetkin, and he would get killed by the Klitschkos.
Are you serious? Guys nearly 41 , spent a decade in prison has only 18 fights and all against unheard of guys. Lets be honest here, the guy has missed the boat IF he had any chance to begin with.
Clearly some one here have not actually seen Mansour fight. His power is tremendous. Sure he threw away his prime... but he's that good stll at 40 years old.. Could he beat a Klit? Probaby not, but besides maybe Solis, or Haye.... I'd take him over anybody else. He has a good defensive construct... and his power is Tyson-esque.
Heavyweights age slower, and he's a verrrrry young 40. If he gets a shot at a top heavyweight, he'll destroy them.