Source: F4WOnline aka Meltzer
One of WWE’s goals during the early part of WrestleMania XXX season is to re-build Brock Lesnar as a destroyer because his win-loss record since returning to WWE doesn’t do him any favors. Officials want him very strong for The Undertaker at WrestleMania, if they stick to that plan. WWE had this in mind when scripting Lesnar to “dislocate and fracture” Mark Henry’s elbow at the Old School RAW. Regarding the Big Show match, word going around is that they are planning a huge F5 spot and from what we know, it won't be a regular F5.
From reading this, the only thing I can think of is the F5 being off the top rope or something. But I don't know if that would end the match. It's possible, but I'm expecting this match to end by Kimura break since I heard Big Show might need surgery to repair a torn labrum