Following his departure on Monday night, Thomas Partey sent a farewell message to Atletico Madrid fans.
The midfielder joined the Premier League side, Arsenal after his £45million release clause was triggered on transfer deadline day.
However, fans of the La Liga side are furious with the midfielder for the way he left.
Partey posted a picture of himself celebrating an Atleti goal and wrote: "Dear Atletico fans, today I only have words of gratitude with you.
"For several years now, Atlético de Madrid has been my home and a part of this family will always be with me.
"I want to thank the club for the trust placed in me from day one, but above all, I want to thank you.
"This wonderful hobby that I accepted from the first moment and that has shown that it is both in good and bad times and you never truly stop believing.
"Atlético de Madrid is not just a club, it is a family. Thank you."
But fans were not willing to join in the feeling of sentiment and slammed the 27-year-old in the replies.
Ismael simply wrote: "Goodbye rat."
Joaquin added: "Leaving the team lying 35 minutes after the transfer market closes is not being grateful, it is being a son of a b****."
And Miguel Torres said: "First you cry for a position in the team, you are given the importance you wanted, and you leave because you do not earn two million more a year. Rat."
Val also did not hold back and wrote: "You don't do that to the team that raised you.