It is the most important game of the Arsenal season, since the farewell of Arsene Wenger continues against Atlético de Madrid in the semifinals of the Europa League. When is? The first stage of the draw is in the Emirates on Thursday night. What time is the start? All the links of the Europa League in the last stages of the contest begin in …Arsenal vs Atletico MadridEuropa League semi-final, first leg Thursday, 8.05pm BST Emirates Stadium.