First I've heard of that, unless they are universally leaked I am pretty sure this information is freely available to media and other relevant individuals in some form. There are sites like this though it's only updated annually -
http://content.usatoday.com/sports/f...s/default.aspx
I forget where you can see the current deals, NFLPA or some site used to have them all.
Compensation and bonus structures can be complex, so they're not 100% accurate in Madden, that's for sure. Would be awesome to be able to do incentive-laden contracts.