The 32-year-old centre-back does not expect to sign a new contract in 2020, and does not know where he will go when he leaves the Gunners
Laurent Koscielny has suggested he is in the final two years of his time at Arsenal, as he could leave when his contract expires.
The centre-back joined the Gunners from Lorient eight years ago but will be part of a new chapter at the club as they prepare for their first season under new coach Unai Emery.
Arsenal have already invested in their defence this summer with centre-back Sokratis Papastathopoulos joining from Borussia Dortmund and right-back Stephan Lichtsteiner being signed from Juventus.