You didnt answer the actual question. Or are you saying the defense is only focusing on Lauri when JC has the ball?
I'm a little confused on what you think is happening. Clarkson isn't a great passer and so he passes to who is open, which isn't usually Lauri since he's being guarded closely. Are you observing something different when you watch the games? I personally haven't seen Clarkson avoid Lauri on purpose, and don't find that scenario probable based on Clarkson's personality.