He hasn't shut the door yet. I am hopeful that a conversation with Sarri and the signing of Jorginho and couple of others will convince him to stay on.
Even if he moves, I have no qualms. He gave six of his best years to Chelsea. I never watched Zola live so for me, Eden was the most talented footballer in a Chelsea shirt. He carried the team to two league titles and an FA Cup and countless memories. The best maybe the goal against Arsenal, a fantastic run shaking off defenders at will. He will leave as a legend and nothing less.