However, Dortmund are keen on a new goalkeeper and are understood to be tracking his progress. They have yet to start any official talks with Ajax, but the Dutch giants are open to selling their No 1 if the price is right. Roman Burki is Dortmund's current first choice and has a contract until 2023, but the Signal Iduna Park club aren't satisfied with some of his recent performances. The German giant's No 2 shot-stopper Marwin Hitz is currently between the sticks for Edin Terzic's side, due to Burki sustaining a shoulder injury. Hitz is out of contract in the summer and a replacement could...