The Dane made 10 changes from the 2-0 win over Crystal Palace at the weekend, but insists that he does not regret the overhaul.
"I have no regrets. You could say 10 changes from the last game but five of the players who played here were in the starting XI against Valencia," he told BBC Sport.
"I don't think I'm wrong if I say we could have been four up at half time. And then with Birmingham's first chance they score, and then the other two goals I think there was a little misunderstanding at the back and in the end we lost the game."