Caulker becomes the newly promoted sides record signing having cost £8 million.
Cardiff City have completed the signing of Tottenham centre back Steven Caulker for a club record £8 million, BBC Sport reports.
The 21 year spent a season on loan at Cardiff’s Welsh rivals Swansea City during the 2011/2012 season but will mow make the permanent move to the Welsh capital.
He said: “I’m delighted to be here and excited for this fresh challenge”.
“You get the sense of excitement from everybody at the club and I’m really looking forward to being part of it.”
Caulker becomes Malky Mackay’s fourth signing of the summer so far, with the Scot looking to bolster his squad for their first season in the Premier League.
The centre back becomes the Welsh clubs record signing, beating the previous record that was made earlier in the summer when Andreas Cornelius joined the club from FC Copenhagen for £7.5 million.
Cardiff’s transfer business is far from over despite the signing of Caulker, with the club still in negotiations with Toulouse to sign midfielder Etienne Capoue, who has also been linked with Tottenham and Everton.
The club moved to sign Capoue when they missed out on Blackpool winger Tom Ince, he decided to stay at Bloomfield Road with his father Paul Ince, who is also the manager at the club.