Kevin de Bruyne has claimed that Jose Mourinho stopped him from joining Borussia Dortmund after Chelsea failed to sign Robert Lewandowski.
The Belgian midfielder spent last season on loan with Werder Bremen, and has since returned to the Bundesliga with Wolfsburg.
The 22-year-old told Bild: "Mourinho said no. That's what they told me and also my advisor. But that is professional football. Where there is a lot of money changing hands, there is also a lot of politics."
De Bruyne made just two Premier League appearances during his two-year spell at Stamford Bridge.