Insider Buzz: Gronk, Patriots Could Be Facing Hard Battle over New Contract

Few players seem to have more fun on the football field than Rob Gronkowski, but off the field, it appears that Gronk and the New England Patriots could be headed for a rough contract battle.

Why is Gronk unhappy with his current contract, and how did he voice his displeasure recently? How receptive have the Patriots been to contract demands in the past?

Watch Bleacher Report NFL Insider Jason Cole discuss Gronkowski and the Patriots in the video above.