We can (and might already have done so) put Carruth on Injured Reserve which means we can bring in a temporary replacement without impacting on the number of players we can sign. The problem of course is finding someone of the standard of Bowns.
tbh as long as Bowns is fit and healthy I'm not worried, he has been stellar so far when I have seen him and he is used to playing the majority of the games so ......... I guess the club will look at how long Carruth is out for and who they can get in and make a decision based on that