Youssoufa Moukoko, the youngest player and scorer in Bundesliga history, has a chance to return into Germany’s under-21 national team once he has established himself at his new French league club Nice. Moukoko, 19, has not been part of the U21 squad lately but coach Antonio di Salvo said that the door is not closed on the striker who went to Nice on loan in summer from Borussia Dortmund. “We decided that it was more important again to stay at the club,” Di Salvo said, citing “totally positive and constructive talks” with Nice. “It will be important for him to play regularly at Nice, to play a …