Mustafi, who will make his first appearance of the season, hasn’t exactly been a popular figure with Arsenal fans, while Luiz has left plenty to be desired since his £8m move from Chelsea.
The thought of Mustafi returning to the team and the two of them playing alongside each other has left Gunners fans on social media…concerned, let’s say, for want of a family friendly phrase.
There was also some displeasure with Granit Xhaka’s involvement.
Mustafi, Luiz and Kolasinac in defence and Xhaka藍
— INVINCEARSENAL (@INVINCEARSENAL) September 19, 2019
Naming a heavily rotated team, Arsenal manager Unai Emery has made seven changes from the side that was pegged back by Watford in the Premier League on Sunday.
There are starts for home-grown teenagers Emile Smith Rowe and Bukayo Saka. Fellow youngster Joe Willock also returns to the line-up, while back-up goalkeeper Emiliano Martinez gets the nod ahead of usual starter Bernd Leno between the sticks.
Some were quite happy to see younger and/or fringe players get a chance to shine.
Pierre-Emerick Aubameyang is one of the few that keeps his place, with Dani Ceballos, record signing Nicolas Pepe, Matteo Guendouzi and Ainsley Maitland-Niles dropping to the bench.
The Gunners remain without injured duo Alexandre Lacazette, Hector Bellerin and Kieran Tierney, while Mesut Ozil has been left out of the squad completely after making his first appearance of the season against Watford over the weekend.