"I know some of the players who are in the current Chelsea team because I played with them in the Spanish national team", he added.
"When I saw Iker play, what caught my attention most was that, when 18 years old, he endured the pressure to play at the Bernabeu".
Chelsea have completed the signing of Athletic goalkeeper Kepa Arrizabalaga, breaking the world record fee paid for a goalkeeper by parting with a reported £72m.
Liverpool are the window's biggest spenders so far, with boss Jurgen Klopp bringing in £160 million of new recruits, but the total spend by Premier League clubs is unlikely to smash the £1.4 billion record set in 2017.
"It is a very important moment. for me and for my career, I am happy that after a long negotiation everything has come to fruition".
The Croatian moves to Chelsea as part of the deal that sees Belgian goalkeeper, Thibaut Courtois go the other way. I fulfilled a childhood dream playing in the Premier League, therefore I am really proud that we were able to win two titles, a League Cup and a FA Cup!
"All of them have told me what it's like to play here and I've had excellent references from them about the game here".
The West London side were able to lure the goalkeeper with an improved after-tax salary and a seven-year contract, with Maurizio Sarri ready to hand him a key role in his new-look side. "I find Sarri's style and ideas very attractive". He was very happy with him.
"I'd like to think so".
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Kepa is second choice for Spain behind Manchester United's David de Gea.
"The market in general has gone up a lot in the last few years", he said.
The LaLiga club's unique policy of only signing players hailing from the Basque region informs a policy of inserting substantial release clauses into the contracts of their prized assets. "But I agree there is a new way to value goalkeepers".