Bayern Munich fell victim to a "brutally effective" Borussia Monchengladbach in their humbling 3-2 defeat on Friday, according to Hansi Flick.

Robert Lewandowski's penalty – his 20th Bundesliga goal of the season – and a fine strike from Leon Goretzka put Bayern in control of the Bundesliga clash at Borussia-Park inside 26 minutes.

However, a wayward pass from Benjamin Pavard led to a quick break that finished with Jonas Hofmann scoring, and the Gladbach midfielder was played onside by Niklas Sule as he doubled his tally before half-time after Joshua Kimmich was caught in possession by Lars Stindl.

Sule then gave the ball to Hofmann inside his own half four minutes after the restart and Florian Neuhaus subsequently atoned for conceding the first-half spot-kick with a bizarre handball by netting the winner.

Gladbach consequently became the first team since Cologne in February 2011 to beat Bayern in a Bundesliga game after falling 2-0 down.

"We had hoped for a different ending to this game and expected it, but in the end we were punished. We lost the ball unnecessarily three times and the opposition was brutally effective in finishing those chances," Flick told a post-match news conference.

"When you ask me how to prevent that, on the one hand you have to keep the mistakes to a minimum, or avoid them, and on the other hand you have to cover your deep positions twice.

"We suffered similar situations on their first two goals. Hofmann went deep from midfield and we moved forward too quickly and opened the centre without covering the deep position, and with the second we should have kept going and covering the positions.

"That shouldn't happen and it's not a nice situation to be in, but a defeat, even if it's Bayern Munich, is part of the game. In the second half the team tried everything to achieve a positive result but unfortunately it didn't work."

Manuel Neuer has now conceded in 10 straight Bundesliga games for the first time in his career, with Bayern letting in 16 goals since their last clean sheet against Eintracht Frankfurt on October 24.

Bayern have conceded 24 goals through 15 matches in the top flight this season, the most they have shipped at this point of a Bundesliga campaign since 1981-82.

Flick added: "I've said it a few times, we are making too many mistakes. You can't deny that the team tried to win.

"We had to fight today, we knew it would be a difficult game. Don't forget [Gladbach] is a team that played in the Champions League against top opposition and prevailed, so we needed this compact team performance and we showed – with the exception of these three situations.

"But of course, we're not satisfied with the result. We all know we need to show even more concentration in our defensive work in the crucial moments. We have to cover the deep positions and that's the challenge we have, and we have to improve in the coming weeks."

Bayern are back in action against 2. Bundesliga side Holstein Kiel in the DFB-Pokal on Wednesday.

Jonas Hofmann played a pivotal role as Borussia Monchengladbach incredibly came from two goals down to defeat Bundesliga champions Bayern Munich 3-2 on Friday.

Robert Lewandowski scored his 20th top-flight goal of the season from the penalty spot after an inexplicable handball from Florian Neuhaus, and Leon Goretzka had Bayern cruising at Borussia-Park in the 26th minute.

However, Hofmann struck twice in the space of 10 minutes to send the teams into half-time level and Neuhaus atoned for his earlier error with what proved to be the winner in the 49th minute.

Gladbach consequently became the first team since Cologne in February 2011 to defeat Bayern in the Bundesliga after falling 2-0 down.

Lewandowski put Bayern in front from the penalty spot following a bizarre handball by Neuhaus, though referee Harm Osmers only pointed to the spot after a VAR check.

Bayern doubled their advantage six minutes later, Goretzka intercepting Matthias Ginter's pass and drilling a venomous effort past Yann Sommer after a one-two with Leroy Sane.

Gladbach reduced the deficit when Rami Bensebaini regained the ball high up the pitch and a quick passing move ended with Hofmann sliding Lars Stindl's throughball past Manuel Neuer.

The hosts drew level in first-half stoppage time when Stindl dispossessed Joshua Kimmich and fed Hofmann for another cool finish - the VAR confirming he was onside when the pass was played.

Gladbach completed the turnaround four minutes after the restart, Hofmann intercepting Niklas Sule's pass and teeing up Neuhaus to curl a wonderful effort into the top-right corner.

Marco Rose's men sat deep and Ginter cleared a header from Sule off the line in the 91st minute, opening the door for RB Leipzig to replace Bayern at the Bundesliga summit if they can beat Borussia Dortmund in a mouthwatering clash on Saturday.

What does it mean? Worries at the back for Flick

Bayern's defensive struggles continued against Gladbach, with Neuer now on a 10-game run without a clean sheet in the Bundesliga for the first time in his career.

He was not helped by Benjamin Pavard giving away possession prior to Hofmann's first, while Sule played a role in allowing the other two Gladbach goals.

Securing the future of David Alaba, who will be out of contract at the end of the season, never seemed quite so important.

Having it Lars

Most teams would think the game is beyond them when falling 2-0 down to Bayern, but Gladbach captain Stindl led by example to turn the game around. He set up both of Hofmann's goals with a pair of quality passes and contested 11 duels before being substituted in the 82nd minute.

Sluggish Sule

Sule replaced Jerome Boateng in the centre of defence but endured a disappointing outing. He played Hofmann onside for the equaliser just before half-time and within minutes of the restart his stray pass resulted in Neuhaus putting Gladbach in front.

What's next?

Bayern are in DFB-Pokal action against 2. Bundesliga side Holstein Kiel on Wednesday, while Gladbach have a week to prepare for a Bundesliga clash with Stuttgart.

Bayern Munich goalkeeper Manuel Neuer is enduring the worst run of his Bundesliga career.

With Jonas Hofmann's goal in the 35th minute of Bayern's meeting with Borussia Monchengladbach on Friday, Neuer failed to keep a clean sheet for the 10th straight top-flight game.

It is the first time the 34-year-old keeper has conceded in 10 successive Bundesliga matches during his 15 seasons in the competition.

Neuer's previous worst streak was a run of nine games between September and December in 2018.

The last time Bayern kept a clean sheet in the Bundesliga was in their 5-0 triumph over Eintracht Frankfurt on October 24.

Denis Zakaria insists he has had no contact with any other club amid reports Bayern Munich are planning a move for the Borussia Monchengladbach prospect.

The 24-year-old midfielder is said to be high on the Bundesliga champions' list of targets for the 2021-22 campaign, with the likes of Manchester City, Chelsea and Manchester United having been linked with a move as well.

A knee injury sustained in March meant Zakaria did not play until November this season, and from seven Bundesliga appearances he has won 24 duels, five tackles, made two interceptions and regained 18 possession times.

His passing accuracy of 86.49 per cent suggests a level of comfort on the ball, which would be crucial at Bayern to allow more attack-minded players to flourish.

For now, though, Zakaria's focus is purely on maintaining his promising rise at Gladbach, with whom he has a contract until June 2022.

"I haven't talked to anyone about a transfer. I'm 100 percent focused on Gladbach and still have a year and a half left on my contract," Zakaria said to Sport1.

"I don't have a classic career plan. But I've dreamed of playing for one of the biggest clubs in the world since I was a young player. 

"To achieve that at some point, I have to work hard here in Gladbach. For now, I'm very happy at Borussia."

Last season, Zakaria regained posession eight times per 90 minutes in the Bundesliga, the best rate of any Gladbach player. 

If he were to join Bayern, Zakaria would play alongside Joshua Kimmich – someone he considers to be the benchmark for midfielders.

"He's just great. Kimmich is currently the best midfielder in the world," he added.

"It automatically raises your midfield to a top level. Of course I like to watch him."

Asked if he had a role model in the game, Zakaria pointed to a couple of prominent Frenchmen.

"I think Paul Pogba is great. My biggest idol used to be Patrick Vieira. He has had a world-class career. I am already emulating him a little," he said.

"But it's always clear to me: I want to be Denis Zakaria and not Pogba or Vieira. I want to put my own stamp on football."

Hansi Flick has told his Bayern Munich stars to show "a different attitude from the start" as he bids to achieve a feat only Pep Guardiola has achieved before.

On Friday evening, Flick can reach 100 points from his first 39 Bundesliga games in charge of the Bavarian giants, needing a win at Borussia Monchengladbach to hit that landmark.

But head coach Flick is unwilling to tolerate any repeat of the shaky first-half performance that saw his team trail Mainz 2-0 on Sunday, before turning the game around to register a 5-2 win.

Guardiola, who joined Bayern ahead of the 2013-14 season, brought up his century of points in the same number of games.

That saw Guardiola lead Bayern to a championship with 90 points before beginning the following season with three wins and two draws.

The Manchester City boss amassed 101 points from his first 39 Bundesliga matches, the first Bayern head coach to achieve a three-figure points haul so quickly.

Flick knows if he is to add an immediate three points to his current 97 points, the European champions will need to pull their weight.

"We have addressed it very clearly and want to go into the game with a different attitude and dynamic," Flick said on Thursday in a pre-match news conference.

"We want to be more present in the duels. We can't just hope for Manu [goalkeeper Manuel Neuer] at the back.

"We need a different attitude from the start. We have to show what we are capable of. The team have this mentality. Gladbach have high individual quality and great tempo."

Flick's side have scored 119 goals in their 38 league games during his tenure, winning 31 times, drawing four and losing only three times.

But there is no certainty they will get the better of Gladbach, having lost to the Foals in the first half of the season in each of the last three campaigns before winning the reverse game.

Indeed, Bayern have only won 13 of 52 previous away games against Friday's opponents, losing 21 times and drawing on 18 occasions.

Flick's recent record in Friday night games bodes well for Bayern.

They began this season with an 8-0 thrashing of Schalke on a Friday, and their previous Friday game was the 8-2 humbling of Barcelona in the Champions League quarter-finals.

Bayern have won 16 of their last 20 Friday games in all competitions (D3 L1), Opta said.

Hansi Flick has ruled out Bayern Munich making any major signings in the January transfer window.

The head coach said on Thursday there was a chance of "one or two" players leaving the European champions.

But in terms of arrivals, Flick said it was important he did not press the club to bring in new faces during a "very difficult" period.

Like all clubs, Bayern's finances have taken a hit, largely because of the absence of supporters from stadiums during the COVID-19 crisis.

"Let me be very clear about this: the current situation affects all clubs in the world," Flick said.

"It's not an easy situation with corona. I'd like to be clear: I don't want to demand new players. I know the situation at Bayern Munich; I know it's very difficult at the moment.

"The squad we have here at our disposal is the squad we'll have until the end of the season.

"I'm not sure if one or two might still transfer. There are certain things that have been talked about, but currently we have very good quality in our squad and I don't think our goals are in jeopardy."

Speaking ahead of Friday's Bundesliga trip to face Borussia Monchengladbach, Flick claimed leaders Bayern "still have room for improvement".

"The team knows it and every single player knows it," Flick said.

Scoring 44 goals in 14 league games has pleased Flick but shipping 21 at this early stage of the campaign is a concern.

"We have to work on that," he said. "It's not about the defence in particular. It's conceding no goals, keeping clean sheets, defending.

"In order to do that you have to have a compact defence and order and organisation with which you pressure the opponent and that's what we have to improve on."

Flick was asked whether Joshua Zirkzee may be on the move, with the 19-year-old on the fringes of the Bayern squad.

He responded: "At the moment I am not aware of any departures, but everything can always go quickly.

"Zirkzee has tremendous qualities and can develop well. He was out of training for a few weeks. He will get games, also with the under-23s. He can take a lot from the professionals, but then he has to show what he can do with the under-23s and put himself at the service of the team. He is good in front of goal, has strong technique and good dynamics."

Bayern have a doubt over Serge Gnabry for the Gladbach game after he was substituted with a knock in the 5-2 win over Mainz on Sunday, Flick saying the forward is "still in pain".

Bayern Munich came from behind for an eighth successive Bundesliga match as the champions overcame struggling Mainz 5-2 at Allianz Arena.

Hansi Flick's side have not taken the lead in a league game since October and might have been staring down the barrel of a second defeat of the season had Danny Latza beaten Manuel Neuer early in the second half.

Mainz had a 2-0 lead at that stage, with Jonathan Burkardt and Alexander Hack scoring in the first half, but Joshua Kimmich and Leroy Sane restored parity in the space of five minutes.

Robin Quaison struck the woodwork as 17th-placed Mainz fought back, though Bayern ultimately had too much.

Niklas Sule's deflected strike and Robert Lewandowski's double – the first of which came from the spot – settling a thrilling contest firmly in Bayern's favour.

Real Madrid are reportedly close to agreeing a deal with David Alaba, while Manchester United are expecting the asking price for Jadon Sancho to drop.

Alaba, 28, is set to leave Bayern Munich with his contract expiring at the end of the season.

The defender is free to speak to other clubs, and Madrid are making their move.

TOP STORY – MADRID CLOSE TO ALABA SIGNING

Real Madrid are close to landing Bayern Munich defender Alaba on a four-year deal, according to Marca.

Alaba is likely to have offers from multiple clubs after establishing himself as one of Europe's leading defenders.

The Austria international has won nine Bundesliga titles and two Champions Leagues among numerous other trophies with Bayern.

ROUND-UP

- With Jadon Sancho yet to hit top form for Borussia Dortmund this season, Manchester United may be able to land the attacker later this year. 90min reports United believe they can land Sancho for less than £100million (€112.7m) after not meeting Dortmund's valuation of £107m (€120m) in the close season.

- Lionel Messi's future remains a major talking point. Sport reports the Barcelona star – who is out of contract at the end of the campaign – will wait until the end of the season to decide between the LaLiga giants, Manchester City, Paris Saint-Germain and MLS.

- Real Madrid are apparently eyeing a replacement for Marcelo. AS reports the LaLiga giants are tracking Sporting CP left-back Nuno Mendes, who is also linked to Liverpool, Manchester United, Juventus and PSG.

- Liverpool are also linked with centre-backs after long-term injuries to Virgil van Dijk and Joe Gomez, while potential exits have been mentioned. However, the Liverpool Echo reports the Premier League giants are not expecting any senior departures in January, which would mean Xherdan Shaqiri and Divock Origi remain despite speculation over their futures.