
Loew will be without several injured players led by captain Michael Ballack, Torsten Frings and Lukas Podolski on Wednesday at Wembley.
The youngsters Khedira and Tasci, both 20, were key members of the Stuttgart team that last season won a surprise Bundesliga title.
The game serves as the final test for both teams ahead of the final round of Euro 2008 qualifying matches in late summer and autumn.
Germany squad:
Goalkeepers: Timo Hildebrand (Valencia), Jens Lehmann (Arsenal)
Defenders: Arne Friedrich (Hertha Berlin), Clemens Fritz (Werder Bremen), Marcell Jansen (Bayern Munich), Philipp Lahm (Bayern Munich), Per Mertesacker (Werder Bremen), Christoph Metzelder (Real Madrid), Serdar Tasci (VfB Stuttgart)
Midfielders: Roberto Hilbert (VfB Stuttgart), Thomas Hitzlsperger (VfB Stuttgart), Sami Khedira (VfB Stuttgart), Simon Rolfes (Bayer Leverkusen), Bernd Schneider (Bayer Leverkusen), Bastian Schweinsteiger (Bayern Munich), Piotr Trochowski (Hamburger SV)
Forwards: Patrick Helmes (Cologne), Stefan Kiessling (Bayer Leverkusen), Miroslav Klose (Bayern Munich), Kevin Kuranyi (Schalke)