surprised the oilers or any team for that matter haven't taken a flyer on Wisniewski. I still don't get why he was bought out. are there long term issues from his injury?
You mean beyond being 32 and having not played an NHL game in nearly an entire calendar year? He's a massive risk for any team, to the point where if you sign him it may well cost double once you factor in the contract for whoever you inevitably replace him with. Consider that even when he was last healthy, he was only good for 0-5-5 in 13 games on a contender. As it was, Anaheim saw fit to scratch him once the playoffs started.
Most teams have someone internal worth trying out for a PP-only role, and if they don't there are far younger/healthier options littering FA, college and Europe. Hell, I'd almost rather have Diaz than Wisniewski at this point.