Buffalo Bills outside linebacker Chris Kelsay confirmed to 13 WHAM's Chuck Wade on Wednesday that he's signed a four-year contract extension with the only team he's ever played for.

Wade reports that the deal adds on to the final year of Kelsay's current deal, meaning that Kelsay is now signed through the end of the 2014 season. He'll be 35 when the new contract expires.

A report from Mark Gaughan at The Buffalo News this past Sunday indicated that the extension was believed to be worth $24 million. If that is accurate, the $6 million per season that Kelsay will begin making next season is a slight raise over the $5.75 million average he's gotten for the past four years. He signed a four-year, $23 million deal in February of 2007.

There has not been any word on any bonuses or guarantees that the new deal includes.

Kelsay has 19 tackles through three games in his new position as the Sam linebacker in George Edwards' 3-4 scheme. For his career, Kelsay has 336 tackles, 22 sacks, three interceptions and five forced fumbles in just over seven seasons' worth of playing time.