The energetic winger has admitted that the youngster's absence is a blow, but is still confident that BVB can emerge victorious in Saturday's clash
Gotze sustained a muscular problem during the semi-final loss against Real Madrid and suffered a setback in training this week, but the Germany international remains confident that his side can cause an upset and bring home the trophy.
"It's very bitter that Mario can't play. I feel really sorry for him, especially as he also missed last year's DFB-Pokal final. But we should not forget that we also won that game without him," Grosskreutz told Bild.
"We are once more the underdogs, but I don't mind that role to be honest. I know very well what we are capable of.
"We obviously want to win the cup. That would be fantastic for us and for the fans.
"I was there when Dortmund won the Champions League in 1997 and it was an unforgettable experience."
Saturday's encounter at Wembley kicks off at 20:45CET.