Mikel Arteta says Arsenal's "finishers" could be "more important" than their starting line-up - a concept taken from rugby union.

For all the money spent, for all the attacking talent that Arsenal have recruited this summer, it was two forwards whose future appeared to be elsewhere who earned a hard-fought…

Gabriel Martinelli scored less than a minute after coming on then set up Leandro Trossard as Arsenal won 2-0 at Athletic Bilbao