Kick every ball, Mikel Arteta told Arsenal's supporters. Kicking Khvicha Kvaratskhelia would have been more helpful. During the period that shaped this first leg, and potentially the tie, Paris Saint-Germain's warrior on the wing was unplayable.
As part of his pre-match battle cry, Arteta had urged the club's fans to 'bring their boots'. But even if every one of them had laced up and joined the quest to combat Kvaratskhelia, he still would have found a way to tie Arsenal in knots.
There is something of Jack Grealish about the 24-year-old.