Neymar is being investigated by the Spanish tax authorities because of a bonus he received for renewing his Barcelona contract before leaving the Spanish giants to move to Paris Saint-Germain.
The Spanish tax office have asked the Barcelona Labour Court for all the documentation involved in the case.
Neymar lived in Spain for over 183 days in 2017 and therefore has to declare all his income from both Barcelona and PSG as a tax resident in the country.
Barcelona reportedly deposited the outstanding amount with a notary before Neymar decided to leave the club to show their willingness to pay it if the Brazilian stayed at the club.
Reports state Neymar’s contract with PSG, which has never been fully revealed, sees him earn around €40m (£34.5m), which places him as the highest-paid player in the world along with Lionel Messi.