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(FILES) In this file photo taken on April 6, 2019 Bayern Munich's striker Thomas Mueller (L) and Dortmund's French defender Abdou Diallo vie for the ball during the German first division Bundesliga football match between FC Bayern Munich and BVB Borussia Dortmund in Munich, southern Germany. - Abdou Diallo will play for French Champions Paris St Germain (PSG) next season Dormund announced on July 16, 2019. (Photo by Christof STACHE / AFP) (Photo credit should read CHRISTOF STACHE/AFP via Getty Images)