MAINZ, GERMANY - MAY 31: Deniz Undav of Germany celebrates scoring his team's third goal with teammate Lennart Karl during the international friendly match between Germany and Finland at MEWA Arena on May 31, 2026 in Mainz, Germany. (Photo by Alexander Hassenstein/Getty Images)

Will Lennart Karl and Deniz Undav (l-r.) start Germany's World Cup 226 opener on 14 June?