The eighteen - 12 months - aged Burkina Faso global joined Chelsea in 2013, but was not equipped to officially place pen-to-paper till January 1 this calendar year, and inside 24 hrs he experienced joined Vitesse.
He performed more than a dozen video games for Vitesse and will return to the Gelredome for subsequent period.
Specialized manager Mo Alllach instructed the Vitesse web page : 'We are delighted Bertrand will join us yet again. He understands our way of working and our kind of style, also he impressed us with his temperament."
The Traore deal is just the newest offer between Vitesse and Chelsea, who have an ongoing connection about gamers, with Brazilian defender Wallace also heading to the club for upcoming season.
Patrick van Aanholt, Lucas Piazon and Christian Atsu all put in final period on financial loan at Vitesse, but they will not be heading again.
The two golf equipment have also introduced that they will be participating in a welcoming in Holland on July thirty.