Mick McCarthy blasted his side for producing their “worst performance of the season” – but promised a backlash for the run-in, starting at Blues.
“That’s as poor as we’ve played this season,” he said. “They were better than us, stopped us playing and were a far better team than us.
“Everybody who has seen it knows that – we just weren’t there at all.
“And if it’s my team, my selection, how we set up, then I guess it’s my fault and me to blame not the players,” he said.
“It was very surprising that we weren’t ‘at it’ because generally we are. And I fully understand the reasons why we get the bird coming off.
“It’s a difficult time when you’re in the bottom three playing against a good side who have just got to Wembley and are playing very well.
“But however we play we have to compete better than that and I’m disappointed with that – it’s not good.
“Wayne Hennessey played well and that’s probably the only positive because but for him it could have been even worse.
“We’ve had words in the dressing room but not in terms of tongue-lashings because sometimes that doesn’t achieve anything.
“I had some of that on Saturday and too much of it wears a bit thin.
“We’ve not had a performance like that all season and why we’ve come from where we were at Villa to what we’ve had in the last four games I don’t know.
“Yes, we’ve lost players and had two-week breaks but that shouldn’t be it – I’m not looking for excuses, I never do, I’m looking for reasons.”
With strikers Kevin Doyle and Sylvan Ebanks-Blake sidelined, Wolves also lost Steven Fletcher with a knee problem which will be further assessed.
“Steven Fletcher has jarred his knee,” said the boss. “Having had to come off he’s injured and we will see how he does.”
McCarthy promises that Blues will be tested by a better display.
“It’s some of the performances during the season that we have to remember – the nine games we’ve won when we played very well.
“I can’t get too excited about Birmingham just yet but, rest assured, we will be a lot better by the time the game comes along.’’