Die Mannschaft's first home game under the 36-year-old ended with Turkey running out 3-2 winners on Saturday evening, where Arsenal's Kai Havertz went from hero to zero.
The former Chelsea man started in a fluid left-back role, where he opened the scoring with five minutes gone before giving away Turkey's game-winning penalty with a controversial handball.
Nagelsmann has an out-and-out left-back on the bench in the shape of David Raum, who is a contender to demote Havertz to the bench, but the remainder of the backline might remain unchanged.
As a result, Mats Hummels and Niklas Sule may have to wait their turn, as Jonathan Tah, Benjamin Henrichs and Antonio Rudiger shield Kevin Trapp, who is taking advantage of Manuel Neuer and Marc-Andre ter Stegen's absences.
By crashing home Germany's second goal at the near post on Saturday, Niclas Fullkrug brought up his 10th international goal in just 12 caps, a record only Serge Gnabry (10 goals in 11 appearances) can better.
Germany possible starting lineup: Trapp; Henrichs, Tah, Rudiger, Raum; Gundogan, Kimmich; Sane, Wirtz, Gnabry; FullkrugNo Data Analysis info