by FOXSports.com

Kansas City has agreed to a 1-year, $2 million deal with veteran linebacker Zach Thomas, a source told FOXSports.com's Alex Marvez.

Thomas joins former New England Patriot Mike Vrabel in the Chiefs' revamped linebacking corps. Vrabel came to Kansas City in the trade that also brought quarterback Matt Cassel.

With the Chiefs planning to utilize a 3-4 defense this season, Thomas will likely be a defensive starter, said the Kansas City Star — which first reported the deal late Saturday.

Thomas, who will be 36 when the season starts, has been to seven Pro Bowls in his 13 seasons in the NFL, most recently in 2006. He was a fifth-round draft pick by the Dolphins in 1996 and played in Miami through 2007. He played for the Dallas Cowboys in 2008.