Arsenal are haggling with Anderlecht over the minor details of Albert Sambi Lokonga's move to the Emirates.
The 21-year-old midfielder is highly rated by Anderlecht boss Vincent Kompany.
The Gunners have agreed an initial €17.5m deal for the Belgian.
But the two clubs are still deciding what percentage of any future sale would be due to Anderlecht, per the Guardian.
A deal has also been agreed to sign Benfica left-back Nuno Tavares.
The north London club have paid an initial €8m for the Portugal U21 international.
