The Liverpool midfielder believes that Sancho and Bellingham can give England additional insight about Germany ahead of their round-of-16 match.
Gareth Southgate has selected a squad filled with exciting young players, who might prove to be the difference at the showpiece event.
Dortmund scored all five goals in the first half. Reyna scored a brace before Marcos Reus, Thorgan Hazard and Jude Bellingham got on the score sheet.
Manchester City beat Borussia Dortmund 2-1 on Wednesday in the second leg of the quarter-finals to seal a spot in the last four of the Champions League.