Watford winger Steven Berghuis will spend the upcoming season on loan with Feyenoord.
Berghuis, 24, joined Watford from another Duth club, AZ Alkmaar, last summer, and made 11 appearances for the Hornets last season.
He will now return to the Eredivisie for Giovanni van Bronckhorst's Feyenoord, who will take part in the Europa League this year following a third-placed finish.
A 38th-minute goal from Davy Propper was enough for PSV Eindhoven to beat Feyenoord to win the Johan Cruyff Shield, the annual curtain raiser to the Dutch season.
The decisive strike strike came following a PSV throw-in, with Propper reacting quickest to drive a low shot beyond Feyenoord goalkeeper Par Hansson, via a slight deflection off defender Terence...