Cardiff have completed the signing of goalkeeper Simon Moore from Brentford on a four-year deal.
City manager Malky Mackay had previously confirmed a deal had been agreed with the Bees, with the 23-year-old becoming a Bluebird on Monday after the necessary paperwork was completed.
Moore told Cardiff City Player: "I'm delighted to be at Cardiff City - to play in the Premier League has always been my goal.
"It's exciting to think that I'll be working with quality goalkeepers like David Marshall and Joe Lewis on a daily basis and I know that I can develop and learn from them."
Moore is set to be quickly reunited with his former team-mates as Cardiff travel to face Brentford in a pre-season friendly tomorrow night.
Moore started his career in the Southampton academy and had a spell with Farnborough Town before joining Brentford in 2009. He kept 13 clean sheets in 52 appearances last term.
Mackay said: "We have been watching Simon for a year or so - he is a real up-and-coming goalkeeper.
"My thanks go to Brentford for the way they went about their business and we are delighted to get Simon in for the start of our season.
"He is one for the future and we have three quality senior goalkeepers in our squad."
Moore becomes Cardiff's third summer acquisition as the club prepare for their maiden Premier League season, striker Andreas Cornelius and defender John Brayford having already arrived at Cardiff City Stadium.
The Welsh club have also had an offer of around £9.5million accepted for Toulouse's French international midfielder Etienne Capoue, and are hoping to convince the 25-year-old his future lies in south Wales, despite reports he is keen on a move to Spain.
Cardiff have also announced that director Mehmet Dalman has taken over as the club's chairman with immediate effect.
Investment banker Dalman takes over from Simon Lim, who had been acting chairman following Dato Chan Tien Ghee's decision to step down in March.
Lim will continue as the Bluebirds' chief executive.
Cypriot Dalman, who has previously worked with Deutsche Bank and Credit Suisse, told the club's official website: ''I am honoured to take up the role of club chairman at Cardiff City Football Club.
''I have enjoyed my time at the club since joining the board of directors in January 2012 and now relish the opportunity to contribute further in my additional role as chairman with Cardiff City in the Barclays Premier League.''