Casemiro is likely to leave Old Trafford during the January window.
The move is being spearheaded by the league’s sporting director, Michael Emenalo.
Emenalo is determined to add Casemiro’s “world-class” talent to the current squad.
The 32-year-old will also become one of the Saudi Pro League’s highest earners.
Casemiro signed for United in August 2022 for a £70 million fee from Real Madrid.
However, there is uncertainty about his long-term future under current manager Ruben Amorim.
Casemiro has 18 months left on his huge contract with the Red Devils.
That deal includes lucrative bonuses and sees him to earn approximately £450,000 per week.
His market value has diminished and United are reportedly willing to accept a fee in the region of £25 million if they decide to offload him in January.
