I think even if Arsenal stumble over the line they need to be looking to replace Arteta. There's some parts to the job he's done well but one trophy in his long tenure at a big club like Arsenal is shocking. His football is atrocious for the money they've spent and there's clearly a mentality block of getting them over the line to win trophies.
It's not necessarily that's he bad manager but sometimes a new voice and different level of manager is needed to push on