Russell Slade told the media that David Marshall missed the 1 - 0 win over a Fulham with an ankle injury.
Coincidentally this 'injury' has come at the same time as the national press have claimed that Everton are knocking on City's door for the Scottish keeper.
The tabloids have run with the story and one Everton website has claimed that some bookies had stopped taking bets on Marshall heading to Everton.
A fee of £6m has been suggested.
The Daily Star also linked him with a possible move to Liverpool but that would be an initial loan until the end of the season.
Everton are without Tim Howard at the moment through injury and could be losing him to the MLS in the summer.
“We kept it quiet, but David pulled out of training on Friday with a recurrence of an ankle problem,” said Slade. “He had a similar problem a week or two ago.
“Even when the ankle was strapped he was struggling to kick the ball. That was the biggest problem.
“Our hope is that he will be back training later in the week and we’ll see how he is from there."
Defender Fabio Da Silva was also missing from the Cardiff line up. He has seen Declan John start ahead of him recently and against Fulham new signing Scott Malone started at left back with John on the bench. Fabio was nowhere to be seen.
With his position now filled and cover available it would seem sense that as one of the higher earners he's moved away from the club.
Meanwhile City have been linked with interest in former Bluebird Adam Matthews. The 22 year old Welsh international is still at Celtic after his move from Cardiff in 2011.