It's in his best interest to retire. He has put his body through enough. He has made more than enough money to provide himself and his family a very luxurious life. The team looks to be heading for a major retooling, if not a full rebuild. And, if they don't, it'll be more of the same frustration he has experienced year after year with no championship to add to his already substantial list of accomplishments. The rest of the guys he was closest to on the team are now all gone. One last season to pass along what he can to the next generation, and then ride off into retirement to live his life and be there for his family.