Keita joined Barca in 2008 from Sevilla and he won 14 trophies during his time at Camp Nou, but was a more peripheral figure last season.
Though the Malian had two years remaining on his contract, he has triggered a reported clause in his deal allowing him to leave after failing to start in at least 50 per cent of the club's games last term.
"Seydou Keita announced tonight that he will not continue at the club next season," a Barca statement read.
"Barcelona would like to thank Seydou Keita for his role at the club in the last years and wish him new professional and personal successes in the future."
The 32-year-old is now widely expected to join several high-profile names in China, with reports suggesting he will sign a two-and-a-half year contract with Dalian Aerbin.
Towards the end of last season, Keita had been linked with the likes of AC Milan, Manchester United and Roma, but seems set to continue his career in the Far East.
One of the top soccer cleats for control the Nike CTR360 will not let you down on the field in tight spaces.
The adidas Nitrocharge is the most talked about new cleat in years. It was released on May 15 and will take your pitch by storm.
The new PUMA evoSPEED 1.2 FG. A great new soccer cleat with classic look and first time for PUMA to be on the cleat.
Ajax has released their away soccer jersey for the 2013/14 season. Get in the Gear.
The push for more color on their cleats, adidas has added the infrared colorway to the adiZero f50 Line.
adidas has added some color to the Predator line with this new colorway. Released on May 17. Be the first to own a pair.
The Liverpool 2013/14 soccer jersey is available for pre-order. The Reds are eager to compete for silver next season.
Bayern Munich are kings of Germany and hope to be crowned kings of Europe at Wembley later this month!
The Juventus jersey for the 2013/14 was released earlier this week. Be the first to wear the colors of the Old Lady.
Borussia Dortmund hears Wembley Calling and are headed to London for the Champions League final.