Borussia Dortmund manager Jurgen Klopp was furious with the performance of English referee Howard Webb as his side just withheld a late Real Madrid onslaught to qualify for the Champions League final on Tuesday.

Goals from Karim Benzema and Sergio Ramos gave Madrid hope of an incredible comeback in the final 10 minutes, but Dortmund just held out to win 4-3 on aggregate, despite losing 2-0 on the night - and Klopp said it wasn't helped by the leniency shown by Webb towards Ramos.

"The game was crazy. From the first seconds, each player of Real Madrid did things to bring the referee to one side so we had to not react and be cool," Klopp said.