“I think Joe has been mentioned a few times over the last couple of years," Warnock explained.
"I think Joe is a super guy, really did well for me at Crystal Palace, but I've not made any enquiries for Joe at the minute."
Neil Warnock opted against spending big during the transfer market. He signed Marlon Pack on deadline day from Bristol City to bolster the midfield, but some supporters still think they are light on numbers.
Ledley has been without a club since leaving Derby County by mutual consent last season. The Wales international was a regular for the Rams in the 2017-18 campaign, but he fell out of favour under Frank Lampard.
At 32, Ledley still has plenty to offer at Championship level and he knows all about Cardiff having come through the youth ranks at the club and going on to make over 200 league appearances in the Welsh capital.
Cardiff face Blackburn Rovers at Ewood Park this weekend, while Ledley's former club Derby are at home to fellow promotion hopefuls West Bromwich Albion.
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