- Heynckes, 72, came out of retirement to take charge of the squad.
- Carlo Ancelotti was sacked after a stinging 3-0 defeat to Paris Saint-Germain in the Champions League.
Bayern Munich have "no more excuses", interim captain Thomas Mueller told AFP after veteran German coach Jupp Heynckes took over as manager of the Bundesliga champions.
Heynckes, 72, came out of retirement to take charge of the squad — his fourth stint with Bayern — when Carlo Ancelotti was sacked after a stinging 3-0 defeat to Paris Saint-Germain in the Champions League.
"A change of coach always releases energy, and I think we, the players, must now give a lot of ourselves. There are no more excuses," said Mueller, at the Ingolstadt headquarters of Audi, a major sponsor of the club.
"The sacred fire is still there with Jupp Heynckes, he has given off a lot of energy since Monday with his team of coaches," the striker added.
Heynckes has reunited the coaching team which in 2013 helped steer Bayern to win the only ever treble of the Bundesliga, Champions League and German Cup titles.