The Gunners loses David Ospina as Napoli agrees to sign the Colombian international goalkeeper.
After a successful loan spell at the San Paolo, Ospina impressed Carlo Ancelotti amidst bringing Alex Meret from Udinese.
Ospina, 30, cost the Gunners £3.2m from Nice in 2014 but will now join Napoli permanently for £3.5m.
He was sent on loan in Naples at the beginning of the season after German goalkeeper Bernd Leno joined the club for £22.5million.
The Colombian made 24 appearances for Napoli last term keeping eight clean sheets.
The Colombian is currently participating in the Copa America tournament and will official sign for the Naples based club after the tournament.