Nigeria coach Gernot Rohr has revealed Chelsea midfielder Mikel John Obi is set to join Marseille.

Off contract in June, Mikel is to sign OM on a free transfer, says Rohr.

I met Obi Mikel in London. He is in the advanced stage of discussions with Olympique Marseille,” revealed Rohr.

“He will leave Chelsea for free.

“This is a serious option.”