On his side's performance, Rooney told Sky Sports: "There's no excuse for putting in good performances then doing that today. It's unacceptable and personal pride has to come into it. Today I have questioned that because we were nowhere near good enough and not a team I want to put out."
When asked if Birmingham - who are partly funded by minority shareholder and NFL legend Tom Brady - will bring in new faces in the market next month, Rooney said: "I hope so. It's clear that there are issues there. It's something we're looking at, we don't want players for the sake of it though. We want players who make an impact."