The Portuguese coach is in talks with the club over a return, six years after he left, according to the Guardian.
The paper report that he would be willing to take on the role again even in the absence of the Champions League next season.
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Who of Europe’s top strikers will move to England this summer?
After a dreadful start to their Bundesliga campaign, Borussia Dortmund appear to have weathered the storm after going five matches without defeat.