The Belgian shot-stopper would prefer to remain in La Liga for another season than return to West London as Petr Cech's understudy, with the 2014 World Cup on the horizon.
The young Belgian has been impressive in his two seasons on loan at Estadio Vicente Calderon since he completed his move from Genk to Chelsea in the summer of 2011, and he helped the Spanish side to victories in last season's Europa League, as well as this year's European Super Cup and, most recently, the Copa Del Rey.
However, with Petr Cech looking as secure as ever in his place between the posts in West London, the 21-year-old Courtois told reporters after the Copa victory over city rival Real Madrid that with the World Cup on the horizon, he would rather spend another year in Spain as a first-team regular than take his place on the Chelsea bench.
"I want to stay," Courtois said. "I’d rather play in La Liga than be a substitute in the Premier League.
"There’s a World Cup and I want to go. Here I will be able to play in the Champions League and there’s no better place to play than here. At Atletico I have progressed a lot."
At this stage it is unclear whether Chelsea would be willing to sanction such a move, particularly with speculation still rife over who the club's future manager may be after the departure of interim boss Rafael Benitez.