I'm a big fan of Cyrus Jones, and was very happy when he was drafted. As an Alabama fan, I knew what he was capable of bringing to this team. As a Patriots fan, I was not at all happy with his rookie year performance. BUT, having said that, I still have a lot of faith in him and that message of his reaffirms that faith, at least to my mind.
I suspect that his problems this year were based not so much on return skills, but his own expectations of himself, coupled with the massive pressure that playing for a team like New England brings. The NFL is much faster than college ball, and being around some really BIG names playing on this team can certainly overawe the new kid on the block. Add to that Coach Belichick and his staff constantly seeing everything, and it's a big deal indeed. Then there's the pressure of living up to the contract that the team gave him.
So, and again this is only my personal opinion on him, if he can find a way to address those issues of self-doubt, or over-thinking things, I suspect he'll have a breakout season in 2017.
He needs to listen to #11: Be Water.