Courtois’ representatives have held a number of meetings with Chelsea officials in the last two months to extend his stay at Stamford Bridge.
The ex-Genk star was back to his best last season after winning the Premier League with the Blues in Antonio Conte’s first year in charge.
It adds to a long list of honours he has won, including two Premier Leagues, one La Liga title, one Europa League medal and the League Cup in 2014/15.
The Belgian star won the Premier League Golden Glove after recording 16 clean sheets, the first Chelsea player since Petr Cech to win it since 2013/14.
Courtois has two years left on his contract where he earns £100,000 a week.
The 25-year-old expects parity with Manchester United star David De Gea, whose deal is worth £200,000 a week.
His wage demands would also put him on par with Courtois’ compatriot Eden Hazard, whose own contract talks are planned this month.
Despite being linked to Real Madrid earlier in the season, Courtois, who spent two years on loan at Atletico Madrid, is keen to stay in the Premier League.
This latest contract wrangle has seen talks end – leaving the goalkeeper’s future in the air.
Even with the goalkeeper’s current deal finishing in 2019, Chelsea are now facing an unhappy situation with their star man between the sticks.