The French right back has finally signalled an end to his Gunners career, telling L'Equipe he is certain to leave the London giants.
There were already strong rumours that the Frenchman, who made 284 appearances for the Gunners, would be leaving the Emirates after he led the lap of honour following the club's final home game against West Brom.
Manager Arsene Wenger had publicly stated that he hoped the former Auxerre defender would sign a new deal with the Gunners, but after the inevitable confirmation from Sagna, it looks like that was never really a possibility.
Sagna himself told French paper L'Equipe that there was only ever a "10% chance" he would stay at Arsenal, before revealing his joy at representing the North Londoners for seven years as well as an eagerness to make a decision about his future before the World Cup.
"It's no longer a secret, I will leave Arsenal for sure," the defender told L'Equipe at France's training base at Clairefontaine.
"They tried to make an effort but the discussions have not gone in the direction I wished it.
"It was an honor to grow in the shirt. Arsenal is a club that brought me a lot, both as a person and as a sportsman.
"There are a lot of calls, a lot of speculation," added Sagna. "Frankly, it gives headaches. I'll sort it all out before the start of the World Cup."
A possible switch to Manchester City has long been mooted, though several other top European teams have been linked with the French international over the last 12 months.
Arsenal are now faced with the decision on whether to install Carl Jenkinson at fullback or shop for a suitable replacement, with Goal reporting that Toulouse's Serge Aurier and Atletico Madrid's Juanfran are on the club's shortlist.