The Dolphins haven't ruled out re-signing free agent Dustin Keller. "He's one of those guys we're evaluating and considering like a lot of other free agents out there," coach Joe Philbin said Tuesday. "We'll see." Rehabbing from the catastrophic knee injury that ended his 2013 in the preseason, Keller has yet to make a visit in free agency. Keller turns 30 in September.