The 26-year-old spent the first half of the season with the Dutch club but his time there was affected by injury. He began last season on loan in the Championship at Leeds United but having made two Carabao Cup appearances, he suffered a fractured bone in his leg and returned to Cobham before his summer switch to Vitesse.
Blackman, who joined Chelsea as an Under-13, has enjoyed success during his time out on loan, including being named Wycombe's Young Player of the Year and helping Sheffield United to the verge of the Championship play-offs. He also spent time in Sweden.
His latest club, Bristol Rovers, are 13th in League One, five points below the play-off places.