Robert Pires has confirmed Alexis Sanchez's extraordinary training walk-out in a first-hand account of the Arsenal session he stormed away from.
Gunners forward Sanchez returned to Arsene Wenger's team against Bayern Munich on Tuesday night after being dropped for the trip to Liverpool last Saturday following a row.
Despite Wenger denying any knowledge of the incident, former Arsenal midfielder Pires, who has been working at the club's London Colney base this season, has now confirmed Sanchez's storm-out.




Pires, 43, says vice-captain Laurent Koscielny had to follow Arsenal's wantaway star player off the field in a bid to calm him down.