Midfielder Leon Goretzka and winger Leroy Sané took part in the Bayern Munich training on Monday ahead of the Champions League opener against Dinamo Zagreb. Goretzka hasn’t been included in the squad for recent matchdays after the club reportedly failed to sell him during the summer transfer window. However, Bayern said on Monday that defender Sacha Boey will be out “for several weeks” due to a meniscus tear in his left knee. Therefore, coach Vincent Kompany could probably welcome Goretzka back for Tuesday’s home game against Zagreb. Sané, meanwhile, is hoping to make his comeback after strugg…