It's too convenient and ultimately unprovable to say all the rest of season would have gone exactly as it did but we would have picked up points X,Y and Z had we only added player A or B. Every single game, every pass, every set piece would be changed in ways we can't imagine. Maybe 4-4 never would have happened with Routledge in the side. Maybe we would have been relegated. Maybe 7th. It's just pointless to speculate and even more pointless (and intellectually bankrupt) to claim to know that it would have affected things in the way that just happens to suit one persons argument.