Chelsea boss Thomas Tuchel had the chance to sign Manchester United striker Cristiano Ronaldo this summer.
The 37-year-old told Manchester United he wants to leave earlier this summer in search of Champions League football.
Chelsea were one of the clubs in for Ronaldo but they eventually decided not to sign him following talks between Tuchel and club co-owner Todd Boehly.
The Times says Boehly pushed for the signing of the Portuguese star as he liked the idea of building the attack around him.
But Tuchel opposed the transfer on the advice of close friend and former United boss Ralf Rangnick, who managed Ronaldo last term.
Rangnick's advice comes as no surprise after he criticised Ronaldo's pressing capabilities at the end of last season.