Speaking during his post-match press conference, the Dutchman hailed his side for their clinical finishing and singled out goalkeeper Cameron Dawson for plaudits.
"We are happy to be in the next round, we were highly effective with our chances and happy with the goals," he told reporters. "The players have been fantastic in training, very intensive work and we are happy with the team
"Our fans gave a lot of support and that gave a lot of motivation to the players.
"Reading gave us problems in the first half, had a couple of chances but we have a fantastic goalkeeper and in the right moments, we took our chances to score."