Arsenal will welcome their North London rivals Tottenham to the Emirates on Sunday, and manager Unai Emery heads into his first derby between the two sides with some big selection decisions to make.
One of the key calls that the former Paris Saint-Germain manager will have to make is at left-back. Before their two games in the past week, it would have been a given that Sead Kolasinac would start in the absence of Nacho Monreal.
However, youngster Ainsley Maitland-Niles started in the 3-0 win over Vorskla Poltava in the Europa League on Thursday, and he made a serious case to get the nod when Sunday comes around.
Kolasinac struggled while playing at left wing-back against Bournemouth last weekend, and if he starts the derby, his lack of pace could be something that Spurs target with Heung-min Son.
Maitland-Niles would have no such worries. The versatile England U21 international covers ground extremely quickly, and he would also offer a stronger attacking threat than Kolasinac.
So, Arsenal fans, do you think Emery should take the risk and start Maitland-Niles on Sunday, or should he play the safe option with Kolasinac? Have your say by voting in the poll below.