AMN has been sleep walking through this season, imo. lots of lapses in effort/attention, and hes been a bit part player (which might be what is causing the lapses in attention/effort)
its clear hes not the first choice RB, and bellerin is going to start over him, and it is clear arteta trusts cedric more than AMN at this point. hes not going to play in the midfield. so it makes sense to loan him out to a team that wants to play him at RB and give him game time