 However, due to Aron and his agent not being able to reach an agreement with Coventry, he was linked with moves away and his agent confirmed that fellow Championship outfit Cardiff City were favourites to sign him.On 8 July 2011, Aron agreed a three-year deal with fellow Championship team Cardiff City on a free transfer, as the fifth signing for new manager Malky Mackay.Coventry were due compensation via him being under the age of 24.