Chelsea have offered Thibaut Courtois a new contract worth more than £200,000 a week.
The deal on offer at Stamford Bridge, which includes bonuses, will see him overtake Manchester United’s David de Gea as the world’s highest-paid goalkeeper.
And Chelsea are growing increasingly optimistic the 25-year-old will sign the new contract despite interest from Real Madrid.
According to The Telegraph, the Belgian’s current £100,000-a-week deal, which runs out at the end of next season, will be extended until 2023.
The Blues have made Courtois’ future their priority and have cooled interest in Stoke City shot-stopper Jack Butland.
Courtois has been a long-term target of Real Madrid but the Spaniards appear increasingly likely to sign Athletic Bilbao keeper Kepa Arrizabalaga in January.
Sportsmail revealed last month that the La Liga club were looking at three goalkeepers, with Kepa going head-to-head with Premier League targets De Gea and Courtois.
But Kepa, who was left out of the Basque derby with Real Sociedad at the weekend with a foot injury, is close to agreeing a move to Madrid and President Florentino Perez would then be unlikely to invest more in the position in the summer.
It is understood Courtois, who spent three seasons on loan at Atletico Madrid, is keen on eventually returning to Spain.
However with Real now focusing their attention elsewhere, the former Genk keeper now looks set to stay in west London.
And he recently suggested he is prepared to do so, despite missing his two young children who live in Spain.
He said: ‘I love my children to death. When you miss them, you are sometimes wondering — shouldn’t I play in Spain in the next few years? That’s why I want to take time to decide how many years I want to sign up. When I sign, I want to tell Chelsea that I have been here for so many years because I am happy here.
‘I like playing here, it’s a nice city, but of course I’m thinking about my private situation. I do not see any reason why I shouldn’t sign, but I just want to take my time with everything. I think I will have an agreement with Chelsea before the season ends.’