The 6-foot-2, 265-pound Warner will participate in his third consecutive training camp with the Bucs.
Warner had an impressive preseason last year, recording 14 tackles and two sacks. But his hot streak was short-lived when received a four-game suspension from the National Football League just before the start of the regular season.
Warner spent four weeks on the reserve list, and when his suspension ended on October 7, the Bucs released him. The Bucs re-signed the speed-rushing defensive end on November 28.
Warner appeared in Tampa Bay's last seven games last year, including its two playoff contests and Super Bowl XXXVII. He played primarily on special teams.
Warner originally entered the NFL with the New Orleans Saints as a seventh-round draft pick. After stints with the Saints, Redskins and Bears, Warner joined Tampa Bay on September 10, 2001.
Warner is the first Bucs exclusive rights free agent to re-sign with the team. Long-snapper Ryan Benjamin and cornerback Corey Ivy have similar contract situations.