He is a head it, kick it, tackle defender. He needs a athletic runner alongside him such as a Tanganga. If he doesn't win first contact then he has someone to cover anyone getting beyond the defence.
Pairing him with a 35/36 year old Ben Mee even though it was Mansfield at home yesterday was not a wise move. You have paired a slow defender with someone even slower that relies on their positional sense.
Then you are relying on the right and left backs to help who will likely be further up the pitch.
That said should we keep him? Not really, as others have said someone his age should be quicker than he is. You can get a similar type of player, similar age but can still win the aerial duals.