Ricky Williams' perpetual comeback apparently will include the 2008 NFL season. The Miami Herald reported Thursday that the agent for the Dolphins' running back received a letter dated Dec. 31 and signed by Bill Parcells stating his contract would be renewed for next season. Williams' agent Leigh Steinberg told the Herald via e-mail that he will allow Parcells, who was hired Dec. 27 as the Dolphins' Executive Vice President of Football Operations, time to get acclimated before contacting him.