Royal Antwerp chiefs were at Watford on Saturday.
Antwerp sports director Luciano D'Onofrio was invited to Vicarage Road by Watford for the draw with Crystal Palace. Accompanying D'Onofrio was agent Mogi Bayat.
HLN suggests top of the agenda between the two clubs was the future of Obbi Oulare.
The striker has been on-loan at Antwerp this season from Watford.
Along with D'Onofrio, also in attendance on the day was Willem II striker Fran Sol - who is a transfer target for the Hornets.