And that seems to be that ahead of City's massive fixture against Bristol City on Friday.
Richardson is the 4th player signed by new manager Neil Warnock after being given a short term contract.
The last 10 days or so has been crazy since Paul Trollope was sacked.
“I spoke to the Gaffer who said the right things and I knew straight away I wanted to play for him," said Richardson.
“I looked at a few options after leaving Villa, but everything here fitted the bill. I’m honoured to play for a big club like Cardiff City and I can’t wait to get started now.”
Manager Neil Warnock said: "Kieran is another experienced player who has committed to us until January - and as I see it that is a no lose situation.
"He's a quality player, established at top level and can contribute towards us moving up the table."