Arthur Abraham believes Nikolai Valuev will be too big for David Haye on November 7.
The 7ft 2in Valuev defends his WBA heavyweight title against the Briton in an eagerly-awaited showdown in Nuremberg that is being billed as 'David v Goliath'.
And former middleweight king Abraham, fresh off his Super Six World Boxing Classic knockout of Jermain Taylor, believes Valuev will outmuscle Haye to keep his belt.
"I think Nikolai is going to win," he said. "For Haye it will be difficult to come out of cruiserweight and fight a man that is as tall and heavy as Valuev.
"I think Haye will tire towards the end because he has a lot of size to push away. Haye is a good boxer, no doubt about that, but I believe that Niko will take care of business.
"He will control the fight with his long left jab."