Barcelona would reportedly have to pay around £225m in order to sign either Mohamed Salah or Sadio Mane from Liverpool due to a clause agreed between the two sides.
Both Mane and Salah have been integral in Liverpool's climb to the top of the Premier League and are valued at £135m according to Transfermarkt.
The Mirror reports that Liverpool agreed a clause with Barcelona when they sold Philippe Coutinho which requires the Catalan giants to pay a premium on Reds' players for three years.
The report adds that this premium stands at around £89m and would have to be paid by Barcelona on top of a players initial value.
Were the Blaugrana to make an approach for Salah or Mane, the report states they would have to pay around £225m.
Coutinho failed to make the desired impact at Barcelona and left for Bayern Munich on loan last summer.