Instead, the apparent no-show only serves to cast further doubt over the 26-year-old's future at Stamford Bridge just five days out from a season-opening trip to Huddersfield Town.
Head coach Maurizio Sarri, following Sunday's Community Shield loss to Manchester City at Wembley, said he would sanction Courtois' departure if the goalkeeper expresses a desire to leave.
"The only club I knew that really made an official offer for me was Barcelona".
"With the players we've got and ability that we've got, we just want to keep on working hard together to make the club great and keep doing well", he said.
And that leaves Chelsea in a race to land a new goalkeeper, with Stoke City's Jack Butland and Sevilla's Sergio Rico on their shortlist, before Thursday's transfer deadline.
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And Courtois reportedly stated his wish to the Italian on Monday.
Aguero edged past Eric Brook's 78-year record as City's all-time top scorer when he scored the third in the 4-2 win over Napoli last November to top Brook's 177 total. Their first-choice Alisson joined Liverpool and they could turn to Butland.
Richarlison from Watford to Everton.
Bournemouth are still hoping to wrap up the signing of Colombian defensive midfielder Jefferson Lerma for a club-record fee.
After a series of events, the spotlight is yet again back on Courtois transfer saga as the player's agent Christophe Henrotay has called on the London club to allow his client to move to Bernabeu, various reports acknowledge.
All that remains is for confirmation that Lerma has agreed personal terms, passed a medical and obtained a work permit.