I’m not sure about assessing Mbye as the worst fullback, but he sure as hell is not a consistent and impactful one. And, the fact that he is club captain is even more troubling.
On another note, I think it is obvious that Liddle is the future at #9. He needs to know that the Club believes in him and have confidence in him. Farah, for all his courage and commitment and loyalty for the club, is not the future. Less of Farah at starting #9 and more of Liddle is the way to go IMHO.