Case for the defence: victory should end Arteta's tinkering 

Thomas Partey's injury meant the Gunners reverted to a familiar rearguard.

PUNCHING UP: Arsenal manager Mikel Arteta celebrates victory. Picture: John Walton/PA Wire.

Mikel Arteta has been in England long enough that he is almost certainly aware of the old expression “if it ain't broke, don't fix it”.

His defensive selections may not have been the most eye-catching note at the end of a dramatic late 3-1 victory over rivals Manchester United but his decisions – whether enforced or not – may now shape how the Gunners move forward.