Bayern have suffered a disappoitning start to the 2017/18 season, losing to Hoffenheim while also drawing with Wolfsberg and Hertha Berlin - results which see them trail league leaders Borrussia Dortmund by five points already.
The club could not be immediately reached for a comment.
Italian Ancelotti took over last season but was sacked after Bayern slipped to second place in the league, twice squandering two-goal leads in consecutive games.
Ancelotti was sacked last month following a 3-0 defeat to Paris Saint-Germain in the Champions League.
Bayern chairman Karl-Heinz Rummenigge said in a statement: "There is a great deal of trust between Jupp Heynckes and Bayern".
Heynckes first managed Bayern between 1987 and 1991, before a short spell as caretaker manager in 2009.
"I would not have returned to any other club in the world", he told Bayern's official website.
Very special means our togetherness with Jupp, "said Hermann who admitted heavily leaving Fortuna who is now leading the Bundesliga standings 2, a caste under the Bundesliga".
Bayern has rehired former coach Jupp Heynckes, 72. He played for two clubs, Borussia Moenchengladbach, where he made 394 appearances and scored 243 goals, before a three-year spell at Hanover 96.
As the contract as just until the end of the season, presumably Bayern will be laying the groundwork for a more long-term successor.
Instead, the club will be looking to Heynckes to bring back the glory days after he won a treble with the club in 2013.
June 16, 2016: The National Energy Board says it has officially started the clock on its review of Energy East. TransCanada says it's cancelling plans for the Energy East pipeline and Eastern Mainline projects.
In the first month, the parent company's site sold around $1.6m in Whole Foods store-brand products in its first month as owner. The analysis by research firm Gordon Haskett measured prices between August 28 and September 26.
Mr Puigdemont said his government would " act at the end of this week or the beginning of next ", in an interview with the BBC . Officials estimated voter turnout for Sunday's referendum was about 42.3 percent of 5.34 million eligible voters.
It can even call your friends for free (in the U.S. and Canada , the feature is coming to the United Kingdom later this year). We will keep you informed on when these features and updates will roll out! It's Google's turn to announce some new hardware.
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Among the injured were two off-duty personnel from the Los Angeles Sheriff's Department, the agency confirmed. She will be greatly missed". "She was a very down-to-earth person, she was a very sweet person", he said.
So they see it as a big potential and they see the e-commerce piece and felt like they had to solve this problem. This acquisition allows Walmart to continue testing ways to offer fast delivery while lowering operating costs .
That festival ran from September 22 to September 24, just days before the October 1 attack on the Route 91 Harvest festival. The spokesperson for The Ogden told ABC News declined to answer questions and told ABC News to talk to Las Vegas police.
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Tom Petty's Songs Served As Anthems For Many Generations
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