The midfield veteran expects Bayern Munich to be fired up for the domestic cup after being beaten heavily by Real Madrid in the Champions League semi-finals on Tuesday
Since retaining the Bundesliga title in record fashion in March, Bayern have struggled to maintain their impeccable form from the start of the season and their drop in standards was highlighted in Champions League semi-final against Real Madrid, with the Spanish team running out 5-0 winners on aggregate.
That defeat ended the Bavarians' hopes of completing the treble for the second year running and has led to suggestions that in-form Dortmund could be in the driving seat to win the German cup when both rivals meet in the final on May 17.
However, BVB captain Kehl believes that Jurgen Klopp's charges will face a Bayern side who will be even more focused on adding silverware to their collection this term.
"Are Dortmund favourites? I don't see it that way," he told Bild.
"Of course, being eliminated is a bitter pill to swallow for Bayern but they will get over it quickly and will be fired up for the final.
"They will muster all their strength and motivation now to at least win a second title but we're completely focused on this title as well and know that we have a chance."