Vidal, 33, is part of a major overhaul at Barcelona under new coach Ronald Koeman.
The same is expected to happen with Luis Suarez, who Barca are trying to negotiate a settlement with.
Much like the Rakitic deal, the fee for Vidal could rise in future with variables.
❗️ ACORD TANCAT PER ARTURO VIDAL. El Barça i l'Inter han pactat una xifra propera als 500.000€ + variables pel traspàs del xilè. El jugador renuncia a part de la fitxa, però se li paga una petita part del sou. Demà viatjarà a Milà. #frac1 pic.twitter.com/nISxnTw983
— El Barça juga a RAC1 (@FCBRAC1) September 14, 2020
Vidal has given up part of the salary owed to him but will receive a small portion as a pay-off from Barca.
The Chilean will travel to Milan tomorrow for his Inter medical ahead of a reunion with Antonio Conte.
The two worked together with success at Juventus and Vidal is a player Conte believes can improve his Inter side.