The Netherlands Under-21 international revealed a phone call from the new Blues manager was key to his Stamford Bridge move, and is confident he can develop in the Premier League
The Europa League winners paid a reported £8 million for the Netherlands Under-21 international, who signed a five-year contract to become Mourinho's second signing of the summer following the capture of Andre Schurrle from Bayer Leverkusen.
Van Ginkel, who meets Mourinho for the first time on Monday for the start of pre-season, explained he was eager at the prospect of playing under the twice Champions League-winning manager.
"It will be the first time I meet him in person", he told Algemeen Dagblad. "We spoke a few times on the phone. That was important. It's good to hear that a coach really wants you. That convinced me.
"The story around Chelsea was around for a longer period. But in the last few days it became really concrete."
Ajax was also in the running to sign Van Ginkel, with the club’s sporting director Marc Overmars claiming a move to Chelsea could hinder his development, but the player himself insisted he was excited by the switch.
He continued: "This move is a big step. Initially I saw the same route for me as [fellow Netherlands Under-21 international] Adam Maher, via a Dutch club, but Ajax cannot match the transfer fees Chelsea can offer."
"But I'm eager and also proud that I'll stand between all those excellent football players. I hope I can play as much time as possible. At Chelsea I can develop as football player."