Reportedly facing significant salary cap problems, the Lions may have a dilemma on its hands with all-world wide receiver Calvin Johnson. Thanks to hitting most of the escalators in his current deal, Johnson has the largest 2012 cap number in the NFL at $21,081,946. Cap situation aside, trying to extend Johnson's contract was probably an off-season priority already since he's entering the final year of his rookie deal and is arguably the NFL's best wide receiver. Johnson will have a tremendous amount of leverage in negotiations with the Lions. ... Megatron's franchise number is so astronomical that the Lions might be forced to let him become an unrestricted free agent after next season if they can't agree on a new deal.