I'd keep him because the squad is so thin, he 'can do a job', and his experience.
If we had more solidly performing able bodies, would not be a problem. BUT we just about squeaked 4th, with NO other competitive distraction, nada. Even WITHOUT shipping out players, we need to sign more guys for depth.
Though his pace is gone, and he consistently gives away set pieces in dangerous places, the lack of talent etc in the existing squad means for me he should stay for another season.