Dario Benedetto has sealed his reported €14million (£13m/$17m) move from Boca Juniors to Marseille, becoming Andre Villas-Boas' second signing at the club.
Argentina international Benedetto joins centre-back Alvaro Gonzalez in moving to Marseille, where he will hope to go some way towards replacing Mario Balotelli.
Balotelli scored eight goals in 15 Ligue 1 matches last season, but left when his contract expired at the end of the campaign.
Benedetto has taken the number nine shirt worn by the Italian, who has been linked with a switch to Brazilian club Flamengo.