Chelsea left-back Jan Matsen could become a player of Borussia Dortmund in the current transfer window, the Evening Standard reports.
According to the source, the German team's representatives have already spoken to the 21-year-old and his agents. "The Bumblebees are considering a loan deal for the Dutch defender. Chelsea's management, in turn, is only interested in a full transfer of Matsen. "The Blues want to make at least €35 million from the sale of the defender.