Chelsea boss Jose Mourinho says he has no regrets over selling Kevin de Bruyne, stating the midfielder was "crying every day to leave".
The Belgium international has developed into one of Europe's top performers since departing Stamford Bridge for VfL Wolfsburg in January 2014, bagging 10 goals in 34 starts in the Bundesliga last term, leading to reported interest from Manchester City.
That form has also led to questions over Mourinho's initial willingness to sell the 24-year-old, but the Portuguese tactician believes it was a shrewd piece of business to offload the playmaker when he did.
"With De Bruyne, if you have a player knocking on your door and crying every day he wants to leave, you have to make a decision. At that time, Chelsea did well," said Mourinho.
"If De Bruyne stayed here, not happy and not motivated, and we'd sold him after a year, we'd have got less – 50 per cent less than we sold him for. So we sold him. At that moment, it was very good business.
"If somebody comes and pays for him what somebody would pay for Messi or Cristiano, it looks from the eyes of the world that it's bad business from us.
"But, if he was at Chelsea and not at Wolfsburg, he wouldn't have reached this level. It was like a wall, a block. He was not ready to compete. He was an upset kid, training very bad.
"He always said he had trained well in his life, but he needs motivation to train well by playing every game. Andre Schurrle a bit the same."