Harper was a prime reason we were destroyed by Melbourne in the first round of the finals last year. Similar circumstance, albeit he had Olam running at him. The rest of the NRL agrees that he is the weakest link in the team - hence the reason the top sides have targeted him with great success.
Thank you for your service Harper, but this has happened too many times, there is absolutely no reasonable justification for keeping him in the side any longer. Particularly when we have somebody as good as Koula waiting in the wings.