Carlisle were relegated to the Conference in 2004 .
Keen remained with the Carlisle until September that year when he joined fellow Conference side Scarborough on a free transfer , playing just four times before suffering a serious shoulder injury .
Carlisle were relegated to the Conference in 2004 , but Keen remained with the Cumbrians until September that year when he joined fellow Conference side Scarborough on a free transfer , playing just four times before suffering a serious shoulder injury .