Gakpo, who scored three goals for the Netherlands at the World Cup, joined Liverpool from PSV Eindhoven on Wednesday for a reported initial fee of £37 million.
British media reported Manchester United were also chasing the 23-year-old before Liverpool sealed the deal.
“He’s a really good player so the package is interesting,” Klopp told reporters ahead of Friday’s game against Leicester City. “Big for him. Big for us. Great day…