The Arsenal players were training on Tuesday ahead of Wednesday evening’s Premier League game against Sunderland at home.
The Gunners will head into the encounter at the Emirates Stadium in North London on the back of a 1-1 draw with Manchester United away from home at Old Trafford.
Arsene Wenger’s side have not won in their last two league games and will be determined to pick up all three points against the relegation-threatened Black Cats.
The players were training on Tuesday, and attending the session at London Colney was club legend Robert Pires.
The former France international attacker is one of the best players in Arsenal history, having played for the Gunners from 2000 to 2006.
During his time at Arsenal, Pires won the Premier League twice, the FA Cup thrice and the FA Community Shield on two occasions.
The 41-year-old was released by Indian Super League club FC Goa in May, according to The Times of India.