In this Champions League quarter-final return, Thomas Tuchel adapts to the suspension of Alphonso Davies and the injury to Serge Gnabry which forces him to reshuffle his entire left wing. The German tactician starts Guerreiro as a left winger, and trusts Noussair Mazraoui as a full-back. Also note the injury to Kingsley Coman who will not be able to make a difference.
Only one change in the Arsenal lineup compared to the first leg. Neither Kiwior nor Zinchenko seem to have satisfied Mikel Arteta who prefers to line up Tomiyasu as a left back.