He wouldn't be the first shitmerkin we signed - Manu Ma'u, Ken Edwards, Danny Wicks, Kirisome Auva'a, even Blake Ferguson...they all had troubled pasts outside of the game, and we signed them, and they mostly turned out good signings for us.
However, my biggest concern with Hayne is his ego, and potentially poor influence in the side.
While it's true that we have leaders in the team now like Gutherson, Mahoney, Nathan Brown, Matterson, Ferguson, etc., I'm not sure if they can keep Hayne in line.
If he beats his charges, he may be grateful for an opportunity to finish his footy career, and give his all.
But he's just as likely to phone it in, and be a disruptive presence.
Given his off-field issues, and poor on-field form, he wouldn't cost a whole lot, so that is a pro.
He may be a decent replacement for Michael Jennings.
I'm not convinced we should make a play for him, though.