Arsenal played a behind-closed-doors friendly against Leyton Orient on Saturday, with Emile Smith Rowe’s involvement notable for a number of reasons. There is a great deal of doubt about Emile Smith Rowe’s future at Arsenal this summer. There is certainly an argument, for the good of his own career, that the 23-year-old needs to leave the Emirates Stadium. He is no longer a central figure in Mikel Arteta’s plans, having fallen down the pecking order in North London. Arteta has insisted that he still values Smith Rowe as a player, but game time has been extremely limited for the midfielder in t…