Leeds United are said to be among 10 Premier League clubs who sent scouts to watch PSV Eindhoven's win over Ajax in the Eredivisie.
Goals from Luuk de Jong and Erick Gutierrez gave PSV a deserved win, with Ajax grabbing a late consolation.
Leeds and other teams had scouts to watch several players of interest.
However, the man who was dominating scouts' attention was Cody Gakpo of PSV.
The forward was linked with a move to Manchester United and Leeds in the summer, but no deals materialized.
He now has 13 goals and 16 assists in all competitions so far this season.
Gakpo is likely to move in the summer, as he may feel he has outgrown the Dutch league.