Milan, who lost to Borussia Dortmund 1-3 on Tuesday, were obviously the more dangerous side who always threatened to penalise Bayern's sloppy pressing game with sublime counter-attacks, reports Xinhua news agency.
They seized their first chance in the 14th minute when midfielder Franck Kessi raced to a pass from left-back Ricardo Rodriguez and drove the ball past Bayern Munich goalkeeper Christian Fruckti.
In the 25th minute, they doubled their lead through Patrick Cutrone who headed in a direct kick from Rodriguez.
Two minutes before the break, Cutrone scored again, this time with a lethal fast attack which easily cracked Bayern's defence.
In the second half, Bayern Munich chief coach Carlo Ancelotti brought on attacking midfielder James Rodriguez whose ability was questioned by former Bayern sporting director Matthias Sammer following their loss on penalties to Arsenal on Wednesday.
The Colombian, who joined Bayern 10 days ago on loan from Real Madrid, found Thomas Muller with only Milan goalkeeper Gianluigi Donnarumma to beat with a deft through pass in the 76th minute, but the German forward hesitated and his pass was intercepted by Luca Antonelli.
In the 85th minute, Milan put the game beyond doubt when Turkish new signing Hakan Calhanoglu made it 4-0 with a rasping long shot.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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