I've never been sold on Griffin, yes he makes big metres, and on his day is a good player, I personally think those days are few and far between, and I always have a gut feeling his effort is very questionable.
I always remember under Radford when Pearson started getting majorly vexed off with some players taking the mickey after being given big contracts, and specifically remember at one game Pearson berating a few players including Griffin, that attitude and lack of application reared it's head again against St Helens away.
Just my opinion everyone's varys, but he's one id be looking to move on as I don't think he's consistent enough, or sometimes fancys it.