The 22-year-old had an outstanding 2017-18 campaign for the Premier League champions, scoring 14 times and registering 19 assists in all competitions for Pep Guardiola's side.
World champions Germany will open their 2018 World Cup campaign against Mexico on June 17, before also taking on Sweden and South Korea in the group stage of the competition.
Goalkeepers: Manuel Neuer, Kevin Trapp, Marc-Andre ter Stegen
Defenders: Marvin Plattenhardt, Jonas Hector, Matthias Ginter, Mats Hummels, Niklas Sule, Antonio Rudiger, Jerome Boateng, Joshua Kimmich
Midfielders: Sami Khedira, Julian Draxler, Toni Kroos, Mesut Ozil, Marco Reus, Leon Goretzka, Sebastian Rudy, Julian Brandt, Ilkay Gundogan
Forwards: Timo Werner, Thomas Muller, Mario Gomez