AC Milan suffered a 2-1 defeat to Cremonese in their Serie A opener on Saturday.
Shortly after the game, former AC Milan defender Theo Hernandez posted a picture of himself winking and giving a thumbs-up on Instagram.
The timing and tone of the post led many fans to believe it was a deliberate jab at the club following his move to Al-Hilal.
Hernandez left Milan on a bitter note after failed contract extension talks, with the club unwilling to meet his salary demands.
Cremonese forward Federico Bonazzoli scores possible Puskas award contender with incredible overhead kick to stun AC Milan.
