Chelsea boss, Jose Mourinho, has insisted Diego Costa was better than Radamel Falcao and Sergio Aguero at Atletico Madrid.
The Brazil-born Spaniard was second fiddle to the two superstars but after both left Madrid he guided the Rojiblancos to the La Liga title with 27 goals.
“He was in Portugal and I never looked at him! He went to Atletico and Sergio Aguero was the superstar, so Diego went on loan. Then, they brought in Radamel Falcao – and Diego went out on loan,” Mourinho said, quoted by the Mirror.
“He was behind very important players. When the chance came to go back, he showed he was better than the previous ones.”
The Portuguese revealed that he had the chance to sign Costa as a 18-year-old but admitted he was ‘blind’ not to see his talent.
"To be fair when he was in Portugal I had a look at him, so everybody was blind, including myself," he continued.
"He can be (the star of the Premier League), yes I know.
The Chelsea boss also reiterated that his side are challengers in the English title race, but not the favourites.
"It doesn't change my approach," Mourinho added.
"It doesn't change my vision, my feeling. We can do nothing more than say, we can do nothing more than feel: we feel we are title contenders, we can't add anything else to this.
"If the first team is better than us, if we are good, very good, but somebody is better than us, that's football, that's not a failure.
"But the only thing you can do is to be good. We have to be good, to be better than last season, in everything.
"We have to fight for titles, and after that if somebody is really better than us, it's because they were fantastic."
Chelsea open their campaign at Burnley tonight.
Do you think Diego Costa will shine for Chelsea this year? Have your say in the comment section below.