Turan, a 30-year-old Turkish global, made the move to Catalonia in 2015 following a hugely-successful 4-year stint with La Liga rivals Atletico Madrid.
CONFIRMED that Arda Turan has joined Istanbul Basaksehir on a loan deal through to the end of the 2019-20 season.
Barca have acknowledged as much and allowed Arda to depart on a two-and-a-half-year loan agreement.
The 30-year-old playmaker returns to his native Turkey having failed to make a single appearance under Ernesto Valverde this season.
The fourth-most capped Turkish player will also be hoping to return to his best for the national team after reversing his decision to retire from global football in August.
The midfielder claimed six titles with Barcelona: one La Liga, two Copa del Rey, one Spanish Super Cup, one Club World Cup and one European Super Cup.
"As such the Turk leaves after completing a clean sweep of domestic trophies".
Arda opted to join Barca from LaLiga rival Atletico Madrid in July 2015, but a transfer ban imposed on the club meant he did not debut until the next January.
Large sections of Barca's fans pleaded with the club to move Turan on over the summer transfer window, but both the board and player repeatedly insisted that a departure was never on the cards.
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