Newcastle United manager Alan Pardew was in the stands at the Amsterdam Arena as Ajax beat Graafschap 3-1 on Sunday.
The main focus of his attention was said to be in-demand defender Jan Vertonghen, who claims to have received "a dozen" offers to leave his current employers.
The 24-year-old has stated that Arsenal is his preferred destination, but Pardew is hopeful that the personal visit to Holland may persuade the player to contemplate a move to Tyneside, according to the Daily Mail.
The Magpies boss is also reported to be interested in Vertonghen's defensive partner, Toby Alderweireld.