Everton have been very cautious and smart in their approach to the summer transfer window.
The Toffees have signed Andre Gomes and Jonas Lossl already, and are looking to bolster their defence and attacking midfield areas.
Although Everton have the likes of Richarlison, Bernard, Theo Walcott, and Ademola Lookman in their ranks, Marco Silva is still looking to bolster that area.
The 24-year-old winger initially joined Marseille on loan from Monaco in 2015 where he paired up with compatriot and manager Marcelo Bielsa.
In the summer of 2015, Marseille signed him on a permanent deal. However, after the resignation of Bielsa Ocampos struggled to impress under new manager Míchel, and spent loan spells at Genoa and Milan.
Last season, he made 28 Ligue 1 appearances for the club and scored four goals.
Ocampos has a contract at Marseille till 2020, and Everton will need to pay £15 million to secure his signature.
Marseille are in a position where they need to sell in order to remain within the boundaries of FFP, and they could seriously consider the offer.
Everton can still hijack the move with a better offer on the table for the highly rated winger.