Heynckes will be replaced by Pep Guardiola next season and it was speculated that he would end his coaching career as a result, but with his side now just two wins away from clinching the Bundesliga title after winning 2-1 at Bayer Leverkusen on Saturday, he says he has the hunger to carry on.
"When I see that Konrad Adenauer became Chancellor at the age of 71, and the new Pope is 76, then I have the right, at the age of 68, to consider doing something else," he told Liga total! television.
Only a week ago, Heynckes turned down the chance to assume an advisory role with Bayern, suggesting again that his coaching career still has some way to go.
That also showed that his relationship with the Bavarian club is not as harmonious as it seems, and he even contradicted his close friend and Bayern president Uli Hoeness on Saturday, ridiculing the remarks he made on Wednesday that the club have been "playing a load of rubbish for the past three weeks."
"We played a great game against Arsenal three weeks ago and then another even better one a week later against Dortmund in the DFB-Pokal," said Heynckes.
"Maybe - and he does have the flu - he has lost track of time a little.
"But Uli is our president and he has every right to complain about things. I think it's good too because we were used to getting so much praise in the past and if you can live with praise, you've also got to be able to live with criticism.
"I've not spoken to Uli about it, but I know him well enough."