The French midfielder was left out of Mikel Arteta’s matchday squad for a second successive game on Sunday when the Gunners booked their spot in the FA Cup semi-finals with a 2-1 win at Sheffield United.
His absence comes amid the fall-out from his clash with Neal Maupay following Arsenal’s defeat at Brighton on June 20, an incident which saw Guendouzi grab the Seagulls striker round the neck.
The 21-year-old avoided a retrospective ban from the Football Association, but hasn't avoided the wrath of Arteta - who has since left him out of his squads for the games.
And Parlour - who made a club record 333 Premier League appearances for Arsenal and won three league titles with the Gunners - believes the former Lorient man needs to control his emotions and listen to his coach if he is to win his place back.