Arsenal defender David Luiz must take a pay cut of £38,000-a-week if he is to return to Benfica.
The 33-year-old previously spoke of his desire to return to the Portuguese club, for whom he played between 2007 and 2011.
As reported by The Mirror, Benfica have a salary cap of £32,000-a-week, which means Luiz would have to take a significant wage reduction. He currently earns around £120,000-a-week.
There has been much speculation regarding Luiz's future this week after it emerged that he only signed a one-year deal with Arsenal when he joined from Chelsea last summer.