Sad to see him go if he leaves, we'll miss his impact, but we have plenty depth in the squad in terms a second rowers. At the end of the day, he's 29, he's hit his peak and for every good thing he does in attack, he generally does something equally stupid and he's one of our poorest defenders in terms of both effort and technique. They may not be as flashy, but I'd be content that a Hansen, Farrell and Lockers back three with Tuson, Hughes and Lloyd waiting in the wings will fill the gap adequately. Hughes and Lloyd in particular have massive potential improvements to come. As good as Hock is, the big trophies won in 2010 and 2011 were without him, so he is far from irreplaceable.
I'm far more concerned about the unproven halves, the depth in the centres and how reliant we'll be on Sam / how he'll be replaced in the long term.