With nine league video games left, Bayern begin the weekend nine factors clear in Germany's top flight, but face a intricate away tie in Sinsheim.
Hoffenheim, who Nagelsmann coached from 2016 till 2019 after rising up via the membership's ranks, are fourth in Germany's pinnacle flight and on a four-match prevailing streak.
They have gained three of the final 5 home games against Bayern, most currently a four-1 thumping in 2020 whilst Croatia striker Andrej Kramaric bagged past due desires.
"We are warned," said Nagelsmann, who defined Hoffenheim as "especially dangerous".
"I'm looking forward to going returned," he said.
"They've won their last four video games, have a whole lot of accurate statistics, installed plenty of crosses and extensive runs.
"After us, they've the maximum kilometres in the warring parties' half."
However, Hoffenheim have been soundly crushed on their final two visits to Munich, most recently in a four-0 rout remaining October.
Their head educate Sebastian Hoeness, nephew of ex-Bayern president Uli Hoeness, has instructed his facet "you cannot lose by using an awful lot in case you play bravely -- and that is what we intend to do".
At the other stop of the table, Borussia Moenchengladbach host Hertha Berlin on Saturday with each golf equipment beneath big stress.