Chuck Liddell: Chael Sonnen Would Be 'Warm-Up Fight,' If I Came Back

Chuck Liddell says he hasn't ruled out an MMA comeback -- and if he does return, Chael Sonnen would be a great "warm-up fight." The 47-year-old UFC legend has been training pretty regularly at Jay Glazer's Unbreakable Gym in L.A. -- and we're told…