He was likewise very solid defensively for the Preds throughout... his reputation for poor defensive play seems to stem solely from some old highlight videos or something. Sure, he would make the occasional unconventionally terrible giveaway, but his overall body of work in his own zone was actually very strong. Limited mobility cost him at times in his last season with us, but nobody battled harder in the corners or in front of the net. I would not see any risk whatsoever with him in a purely defensive role. Because of his competitiveness he will take more penalties than most players, however.
But I suspect that with his back injuries he has to put in a lot of physio work and live with a lot of discomfort to play that style, and is always going to be one more tweak away from even more limited mobility. So if he hasn't been putting in the work or doesn't want to face that discomfort again for another year, the broadcast booth may be his smarter choice.