If you can keep Mitch fit he will be a fantastic signing for you, Im gutted he's leaving tbh. His only knock is his fitness record, when he's on the field he's one of the best props in the comp imo, massively underrated. In 2017 when he played most games, he made more meters per carry than any other forward in superleague.
This season he only played a handful of games but in those games he was very good, He was by far the best player on the pitch against your neighbours earlier in the season at headingley.