Arsenal are demanding a sell-on clause be included in the sale of Folarin Balogun to AS Monaco.
Arsenal and Monaco have agreed a 38m fee for the striker, who underwent a medical over the weekend.
The Sun says as part of the deal, Arsenal are insisting a sell-on clause be included.
Gunners chief Edu had originally sought 50m for Balogun before deciding on a compromise last week.
An announcement over the USA striker's transfer is imminent.