Speaking at a live-streamed press conference, Longoria said: "On the contractual situation, OM has 60 per cent of the economic rights of the player, 100 per cent of the sports rights with a possibility in case of qualification in the Champions League, to increase by five per cent to reach 65 per cent. We are very happy with Mason's evolution. It is a daily work of everyone to the athlete, especially in the evolution of his game. We know his talent but the work that De Zerbi does with him is extraordinary.
He added: "Mason is working to improve his level and the way he sees football collectively, which is his biggest evolution. We are aware of having a very important player who puts himself at the service of the collective, we want a continuity with him. It’s hard to have some key players, but you need a collective."
Marseille currently sit in third place in the Ligue 1 table after 16 games played, five points behind leaders Lens.