Cardiff City have completed the signing of England Under-21 international midfielder Jordon Mutch from Birmingham City.
The Derbyshire-born 20-year-old had previously worked under manager Malky Mackay, during a six-month loan spell at Watford in the 2010-11 season.
"I'm delighted that we've managed to bring Jordon in here at Cardiff City," Mackay told the club's official website. "He's a talented player who I know well, both from my time working with him back in Watford and from the progress he's made at Birmingham City.
"Jordon is a top player with great potential for a big career in the game, which we hope to see him fulfil with us here at Cardiff City.
"His record of playing right through from Under-17s to Under-21s for England is also impressive and Jordon will no doubt make a great addition to the squad that we are building here."
Mutch, who made 29 appearances last season, has signed a three-year deal after joining the South Wales club for an undisclosed fee.