Jupp Heynckes adamant he won't stay at Bayern Munich next year

Jupp Heynckes has vehemently ruled out staying beyond next summer at Bayern Munich, despite president Uli Hoeness saying that he could be persuaded to extend his stay.

Heynckes, 72, was appointed interim coach until the end of the season in October -- his fourth spell in charge of the German giants. Asked if Heynckes could stay on at the end of the season, Hoeness said on Friday: "I believe it is possible, yes -- nothing is ruled out."

However, responding to his close friend's comments after Bayern's 2-1 defeat against Borussia Monchengladbach, Heynckes said: "I don't know why Uli said what he said.

"We have an extremely clear agreement and that runs until June 30, 2018, and that is the way it is staying. I don't want to comment on this every week. That's pretty clear."

Bayern slipped to their first defeat under Heynckes since he oversaw a loss to Bayer Leverkusen in December 2012 in their Treble-winning season -- a run of 31 Bundesliga games.

Gladbach took control with two goals in a five-minute spell just before half-time. Thorgan Hazard put the home side ahead from the penalty spot on 39 minutes, before Matthias Ginter doubled the lead from close range a minute before the break. Arturo Vidal reduced the arrears with under 20 minutes remaining but it proved a mere consolation.

In addition to talking about his future, Heynckes bemoaned his side's display in the opening period.

"Our first-half performance was to blame for the defeat. We didn't work hard enough, we were too slow and found no rhythm," he said.

"Tactically, Gladbach played cleverly on the counter-attack and we conceded the second goal out of nothing just before the break which is bad psychologically."

He added: "But in the second half we invested a lot more, the game was concentrated on their goal.

"We were better defensively against the counter-attack and we had a host of opportunities to score, but as I said, we lost the game in the first half."

Niklas Sule was adjudged to have committed the handball offence for the opening goal and was unhappy with referee Manuel Grafe's decision.

"It's reaching dubious proportions now -- that is a 20 percent a penalty. It glances my finger," he said.

The reigning champions also lost Juan Bernat and James Rodriguez to injury before half-time as nearest challengers RB Leipzig closed to within three points with a comfortable 2-0 win over Werder Bremen.

James clashed heads with Gladbach's Tony Jantschke after 33 minutes. The Colombia international received treatment but played on as Bayern conceded twice in five minutes before the break.

He was substituted at half-time and Heynckes said: "He didn't know the score at half-time. Therefore, I think he has concussion. But the doctors have to check him out first."