This increase is tied to a clause in his contract, which was agreed upon when he joined United from Real Madrid three years ago.
The clause guarantees a 25% boost in salary if the team returns to the Champions League for the next season.
Victory in the Europa League final would grant United a spot in the Champions League, making this a likely scenario.
As a result, Casemiro's salary for the upcoming season could potentially reach £500,000 per week, a substantial increase from his current rate.
Casemiro, now 33 years old, has been with Manchester United for three years and has been an integral part of the team.
