Former Olympique Marseille coach Gérard Gili has urged owner Frank McCourt to go for Chelsea striker Diego Costa.

OM are planning to make a big impact in this summer's market, with a marquee striker signing high on the agenda.

Gili would like to see Costa at Marseille.

"OM must rely on boys who are armored in terms of environment and pressure. I saw that Diego Costa was unsettled in Chelsea. He could have the stuff for Marseille.

'I would also like a leader like Mesut Özil. He would be a good idea," said Gili, referring to Arsenal midfielder Ozil.