Magennis is better than Ashurst and Dixon IMO. He's got all the ingrediants there to be an absolutely belting prop forward. BUT IMO it's too early in his development for him. He will be targeted and smashed and won't benefit from it. This season, ideally, he wouldn't have been able to get in our 17 apart from cup games and would have been out on a dual reg contract for a season or two so he can learn the game and develop physically in a less demanding environment.
Magennis has played 15 games this season I reckon. Compared with Clough on 6 and Perry on 9. Too early in his career and too soon after such a serious injury IMO.
Ashurst should be released IMO, he's not up to it. Dixon is fine defensively but will never contribute with the ball.