Heynckes was confirmed as Carlo Ancelotti's replacement at the Allianz Arena on Monday for what will be his fourth spell in charge of the club, the last of which ended in 2013 when he guided the Bavarians to an historic treble.
The 72-year-old's first game back in charge will be Saturday's Bundesliga clash with Freiburg on home soil, a match that has quickly turned into a pivotal game, as Bayern are already five points behind Borussia Dortmund in the Budnesliga standings.
Former Germany international Sammer is certainly pleased with Heynckes' reappointment, as he believes the experienced coach is exactly the right man to galvanise Bayern's season.
"Absolutely [it is] 100 per cent the right decision," Sammer told Eurosport. "Jupp looked as if he had never been away, he looks good and recovered.
"I am convinced that this will be a very good story. You still have to count on Bayern Munich this season."
Sammer was also quick to dismiss questions surrounding Heynckes' age, as he believes the former Real Madrid coach still has the energy and desire to succeed at the top level.
"The number of age is not related to his sense of life," he added. "It is a challenge. He looks young anyway."