Nonetheless, Petit was quick to jump to the defence of the new signing, urging fans and critics to show patience.
Speaking to RacingTipster, he said: "Well, this is only the first game, guys, come on. Give Viktor Gyokeres time. I remember myself when I first came to the club, it probably took me a couple of weeks to adapt to English football and to understand exactly my teammates in terms of movement and things like that. So, this guy was playing in Portugal. Sporting were so dominant, they were always in possession of the ball, and they were always playing for him."
Petit’s criticism extended beyond Gyokeres’ individual struggles. The Frenchman was surprised by how Arsenal dropped back defensively, something he didn’t expect from a team that had shown such high pressing in recent seasons.
"He didn't receive much service from his teammates this weekend," he said. "He was quite alone, he didn't get any support from his teammates. I was quite surprised sometimes how Arsenal dropped back defensively. They used to show high pressure all the time to the opponent; it doesn't matter if you play at home or away from home."