"I believe that we are on the threshold of a relatively great generation," he told Bayern 1.
"When I think that we managed to extend with Manuel Neuer, and we have Joshua Kimmich, Niklas Sule, Robert Lewandowski and hopefully David Alaba and Thiago Alcantara [also agreeing contracts], and I also hope with Leroy Sane, with [Kingsley] Coman, [Serge] Gnabry, a young, developable team.
"I can imagine, if everything goes well, that a new era is just beginning at Bayern Munich."
He added: "We would certainly like to have Kai Havertz but, at the moment, it is so that one does not know exactly what the economic future of all football is.
"I would like to see him in Munich from a sporting perspective, but as of today I honestly cannot imagine it, although I would like to see it."