The Berlin-born midfielder could face his half-brother, Jerome Boateng, when the nations clash in Fortaleza this weekend.
The African country suffered a 2-1 defeat to the USA in their opening game, and Boateng believes that their encounter with the Germans will be reminiscent of "ancient Rome" as Ghana look for their first win.
"It's like in ancient Rome. There will be people around the pitch who want to see how two teams fight," the Schalke 04 ace told Bild.
"The team who wants it more will win and we will fight to the death against Germany."
Saturday's game kicks off at 8pm.