Ilkay Gundogan is aiming to put past Champions League disappointments behind him as Manchester City look to secure a place in the semi-finals. City lead Dortmund 2-1 in their quarter-final tie ahead of Wednesday's second leg in Germany. "I know we have great players and a great team. We are capable of going into the semi-finals. We should have been there earlier in the last few seasons," said the German. Gundogan was in fact part of the Dortmund side which lost to Bayern Munich in the 2013 final at Wembley.