Watford filed an official complaint against Everton for what they claim was an unwarranted approach for Silva last autumn when the sounded him out over the possibility of replacing Ronald Koeman.
The Hertfordshire club rejected more than one offer of compensation, then highest variously reported as being between £9m and £15m, and refused to let the Toffees hierarchy discuss their vacant manager's position with the Portuguese.
Citing Everton's attempts to "tap" him up as the reason for a nosedive in results, Watford eventually sacked Silva himself in January but there was still a reported £1m offer of compensation from Goodison Park on the table as recently as a month ago. That is said to have been withdrawn as the Hornets are still pushing for almost £10m.
It is the Watford Observer's understanding that the Premier League will mediate the second meeting between the two clubs.