Unai Emery’s team are under no illusions about the perils of missing out on Champions League qualification if they fail to beat already qualified Chelsea in BakuFor all the Europa League branding embossed over Baku’s Olympic Stadium, European football’s little brother could not quite escape the influence of its big brother. If there is one thing that adds an extra edge, an extra layer of intrigue, to this oddity of a London derby taking place roughly 2,500 miles from Big Ben it is that there is more than a trophy at stake. Arsenal desperately crave the return to the Champions League that triumph would bring in this final. Chelsea can deny the...