Cardiff City boss Malky Mackay is furious with Dekel Keinan for tweeting his loan switch to Crystal Palace.
The Daily Mail says Eagles manager Dougie Freedman has swooped for the Israel international on a six-week deal and the 27-year-old will go straight into the squad for Saturday's south London derby against Millwall.
Palace and Cardiff were both keen to keep a lid on the deal until it was ratified by the Football League.
But Keinan jumped the gun after posting on Twitter: "Yeh! On loan to crystal palace for 6 weeks. Can't wait for the first game!!!"
However, his Tweet infuriated Mackay after the Bluebirds boss was informed of the player's post.