Ok, as much as I agree on Clarksons running/fighting ability and yes, he is a team player, I can not imagine he will manage the Championship. His technical abilities are way beyond standard.
As most people know, I dont really rate him, but I have to admit he scored his goals this season, however I am sure that any other striker in the same position would have scored the same amount of goals. Problem is/will be that we dont have any other strikers who can play Clarksons role.
As for the money: If its more than 300k I would def let him go, or I would ask him to sign a new contract. FRom a business point of view, JB would have to decide: money or player and if its player, then only with a new contract. Motherwell cant afford to give a player away for free.