The 22-year-old German international completed a £20million move to the Europa League champions on Thursday, signing a four-year deal at Stamford Bridge.
Speculation had been swirling for months that Schurrle was set to sign for Chelsea, and after putting pen to paper on a long-term contract, he revealed that the arrival of Mourinho convinced him to swap the Bundesliga for the Premier League.
"Mourinho has a great personality and is just a cool guy," he said. "He was a big influence in my move.
"He gave me a handshake when we were at Michael Ballack's testimonial game, and said 'it's OK, soon you'll be with me'. It gave me a lot of pride and was a great feeling."
Schurrle adds to an already impressive plethora of attacking midfield talent at Chelsea, joining the likes of Eden Hazard, Juan Mata, Oscar, Victor Moses, Marko Marin, and Kevin de Bruyne in west London.
And that's before you even consider fellow midfielders Frank Lampard, Ramires and David Luiz, meaning that Mourinho will do well to juggle his pack enough to keep all players happy next season.
But, despite his huge array of options, Chelsea are expected to be active again in the transfer market, with one or two more acquisitions likely to follow before the 2013/14 campaign kicks off in August.