"But I probably have a couple more seasons left in me and I wanted to experience a different sort of challenge before I hang up my boots.
"Gloucester have been really good to me, and there was the chance to stay but Bristol is an exciting project.
"That's all a few months down the line though. We've still got heaps to play for here at Gloucester and I can assure everybody that'll I'll be giving it absolutely everything to make sure this season is as successful as possible for the club."