Thanks to the 2011 CBA, all rookie contracts are now for a length of four years. Only first-round selections come with an option for a fifth year, which does not apply to Warner. Having set numbers for each spot eliminates the need to negotiate salaries and only leaves items like bonus payment terms, roster bonus allocations, and other miscellaneous structural items.
The total value of Warner's four-year contract is believed to be $3,470,188, or very close to that amount, according to Over the Cap. That includes a signing bonus of $1,010,188 and a 2018 salary cap figure of $732,547.
http://www.49erswebzone.com/articles/116583-49ers-sign-3rd-round-draft-pick-fred-warner/