Russian legend Emelianenko, 31, squares up against former UFC heavyweight champion Tim Sylvia in a fight for new MMA promotion Affliction on 19 July.
But speaking exclusively to SunSport, British star Bisping, 29, claims The Last Emperor will go into the bout with 32-year-old American Sylvia at less than full fitness.
Bisping said: "It’s going to be good to see if Fedor is still the man but I’ve heard on the grapevine from inside sources that he could be injured."
"But this is time for Fedor to step up. Everyone knows what Tim Sylvia is all about but Fedor’s had an aura about him for a long time."
But Bisping admitted: "I think the fight will play out similar to when Randy Couture fought Tim Sylvia, but I’m picking Fedor to beat Tim."LINK