The FCB coach feels the versatile attacker has been superb for the Bavarians this term and believes he is back to his usual best after struggling a bit last year
The Germany international has already netted four times in as many Bundesliga games this term, while setting up three more, and Heynckes feels the versatile attacker has been in extraordinary form.
"Thomas has been absolutely outstanding this season," Heynckes was quoted as saying on the official Bayern website.
"Thomas is unpredictable. He's always agile and incredibly committed.
"This is the Thomas Muller we all know and love."
The 23-year-old attacker has not missed a single minute yet for Bayern this league campaign.