There was good and bad news for the Bavarians over the weekend as two more players joined the squad for pre-season training, but their coach picked up a muscle niggle
Die Roten's Germany internationals are yet to join up with the squad following their exploits at the Euro 2012, but the team are boosted by the integration of the attacking talents of the Dutchman and the Croatian as their preparations for the new season get under way.
Mandzukic joined the Bavarian outfit from Wolfsburg for an undisclosed fee following a string of impressive performances for his country at the European Championship in Poland and Ukraine.
The news that Heynckes has picked up a hamstring injury during training will come as a blow to the club at such a crucial time ahead of the new season, and the extent of his injury is set to be revealed following treatment.
Bayern will be looking to challenge for silverware this season, after a disappointing 2011-12 campaign, that saw them finish second in the Bundesliga, lose out to Chelsea in the Champions League final, and get thrashed 5-2 in the German Cup final by their rivals Borussia Dortmund.