Goal revealed last month that Sagna would quit the north Londoners and the Frenchman confirmed as much following the club's FA Cup win over Hull.
It is anticipated that Sagna will sign for the Premier League champions this summer after opening formal talks with Manchester City in May and the right-back took to Instagram to thank the club he spent seven seasons with.
He said: "To be fair, I don't even know where to start or even how to say it... but i just wanna thank the whole Arsenal FC... a family to me, a club who taught me so much in 7 years, a club where I had the chance to progress day by day, a club who always gave me his trust whenever I was personally not at my best, a club who change the kid I was to the man I am today, a club where I had the pleasure to give 200 per cent every game.
"I wanna thank the whole staff working at the club, the fans for accepting me so fast, making it smoove [sic] for myself and my family, my team mates witch [sic] I consider my true friends today and I had a great pleasure learning with them.
"Of course I wanna thank the coach MR WENGER... who believed in me..gave me his trust..and clearly changed my life. Now, it's time for me to move on and one more time THANK YOU."