Chelsea star worth €35-40m tells club he wishes to leave this summer

Chelsea star Ian Maatsen is ‘very comfortable’ at Borussia Dortmund (Picture: Getty)Chelsea star Ian Maatsen has told the club that he wants to join Borussia Dortmund on a permanent deal this summer, according to reports.The left-back joined Dortmund on loan in the January transfer window and the German side are thought to be desperate to keep him at the Westfalenstadion.Maatsen scored his first-ever Champions League goal this week as Dortmund reached the semi-finals with B