Ter Horst has signed for Hull from non-league club Folkestone Invicta this week.
Invicta boss Neil Cugley told the Hull Daily Mail: "He's a very exciting young player.
"He's very slight in stature but he's great at turning players and getting in behind with his pace. He's certainly not afraid to take players on either.
"I've been around the non-league scene for a while and he reminds me of Kevin Phillips when he was coming up through Baldock Town. He's in that same mould where he gets his shots off quickly. He's scored some fantastic goals for us."
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