http://www.spotrac.com/nfl/new-england-patriots/rob-gronkowski-6551/
rookie contract was 2010-2013. No he didn't demand a high rookie contract like Jamarcus because he was drafted much later.
He did have his contract done to be highest paid TE and New England also met with rosenhaus a month ago about Gronk again.
He's also a guy who had injury issues in 2012 and 2013. So to the other poster comment about winning the sb easier. I'm not sure that's the case if Gronk is unavailable.
Like said earlier this isn't madden where you essentially plug and play and avoid injuries.
Ftr New England also only won once with Gronk too.