Thibaut Courtois is eyeing a World Cup final clash with Spain as Belgium prepares to begin its World Cup knockout campaign.

The Chelsea goalkeeper spent three successful seasons on loan at Atletico Madrid, which has provided players including Diego Costa and Koke for Spain's World Cup squad.

Now starring in the Premier League with Chelsea, Courtois has helped Belgium reach the knockout rounds at Russia 2018 with maximum points.

And ahead of Belgium's last-16 tie against Japan, Courtois is already allowing himself to look ahead to a possible final.

"Of course, it's a dream to play a World Cup final, especially to play against Spain because I know a lot of people there. It's a nice final," Courtois said.

"I think Spain played good football against Portugal, even though they conceded three goals. Same against Iran, so ... oh no, it was against Morocco!

"I think they play well but they also concede goals."

Spain meets Russia in its round of 16 tie, with Belgium facing the winner of the match between Brazil and Mexico should it reach the quarterfinals.