Journeyman

In American English, a journeyman or journeywoman is an athlete who is technically competent but unable to excel. The term is used elsewhere (such as in American, British and Australian contexts) to refer to a professional sportsman who plays for numerous clubs during his career. In Britain, the term is also used derogatorily, along with mercenary, to refer to players who join various affluent clubs purely in search of higher contractual payouts rather than to further their career; usually clubs which they would likely never join otherwise.