Maurizio Sarri provided an update on Courtois' future before today's match, saying: "At the moment Courtois is the goalkeeper of Chelsea". He even agreed to join Manchester City, only for Chelsea to steal Jorginho in the 11th hour.
Chelsea have signed former England No.1 Robert Green as backup this summer while Polish teenager Marcin Bulka has impressed during pre-season.
And according to Goal.com, it was the Blues' assistant coach Gianfranco Zola who pushed for the 17-year-old's inclusion in the preseason squad.
FA Cup winners Chelsea finished fifth, 30 points behind champions City, in the Premier League last season.
"Courtois is the goalkeeper of the club, I don't know in the future, it depends on the club, and especially on him I think".
"I'm very happy with David, for his attitude".
Club colleague Eden Hazard is another to have sparked talk of interest from Madrid, while Tottenham defender Toby Alderweireld is said to figure on Manchester United's radar. "I hope Courtois will be our goalkeeper", he said.
With Palace's opening game of their Premier League season away to newly-promoted Fulham in just one weeks time, they will need to move quickly should they want to secure his services for the start of the season.
They go on to state that he is unlikely to force the issue before the window closes next Thursday, but will pursue a loan move in Europe if he is not playing regularly before August 31.
Guardiola he says he is not bitter because he only wants players who are committed to his project.