Roly is so crucial to our attack higher up though, I'd be reluctant to bring him further back.
Not necessarily my preference but Manny could also go in there with Boxall and Fenton at fullback. Seems less disruptive to the team overall.
Manny is not capable of playing in the DM role that the team is now playing. He played that role for Ricki when it was more a straight defensive role. Nowadays it is more often than not, the start of our movement forward, collecting the ball from the back four then finding other options going forward and I do not think Manny has that skill set.
The defensive side is important, but the starting point of transition to attack is equally so.