I have recently had my 03 K3 repaired after a prang

and riding home tonight I noticed more and more play in the clutch lever. I got home by using the tightener, but it slipped even more and that is at the most taught it can get.
I am thinking that something has come loose inside the clutch mechanism and the cable is slipping? The bike has only done 6.5k miles so it is unlikely to be a knackered clutch.
Anyone got any ideas?