According to Arsenal's official sources, the club has negotiated with Aubameyang to terminate the contract.

Aubameyang, 32, joined Arsenal in January 2018 and made 162 appearances during his time with the team, contributing 92 goals and giving 21 assists, winning one FA Cup, one community shield and one Premier League Golden Boot.
According to previous sources, Aubameyang has signed a contract with Barca, and the deal is about to be officially announced.