Belgium midfielder Kevin De Bruyne says he only spoke to former manager Jose Mourinho twice during his time at Chelsea.
De Bruyne, now at Manchester City, made only three Premier League appearances in two years at Chelsea, spending a season on loan at Werder Bremen.
He left for Wolfsburg in January 2014 before moving to City in 2015.
De Bruyne scored 10 goals in 33 Bundesliga appearances for Werder Bremen before returning to Stamford Bridge, when the then Borussia Dortmund manager Jurgen Klopp - now in charge of City's title rivals Liverpool - wanted to sign him.
De Bruyne said: "Mourinho texted me, 'You are staying. I want you to be part of this team'.
De Bruyne started two of the first four league games of the 2013-14 season, but soon fell out of favour with Mourinho and was dropped to the bench.
The following month, De Bruyne joined Wolfsburg for £18m.
He scored 13 goals in 51 league appearances before becoming City's record signing in 2015 when he agreed a £55m, six-year deal.
'You threw me in the garbage' - on making a point
De Bruyne said his first "life-changing moment" came as a teenager.
In his second year at the academy, he lived with a foster family, provided by the club, but after a season they said they did not want him back.
"It's because of who you are," De Bruyne's mother told him. "They said you're too quiet. They can't interact with you. They said you were difficult."
De Bruyne said: "I kicked the ball against the fence for hours, and I remember at some point I actually said out loud, 'Everything is going to be OK. In two months, I'm going to be in the first team. No matter what, I am not coming back home a failure.'"
The following season, he was promoted to Genk's second team, for whom he scored five goals in one half of a game.
His foster family turned up at the club saying they wanted him back.