 On the opening game of the season, Seip made his debut, in a 1–1 draw against Heracles Almelo; weeks later, Seip scored his first goal in a 4–2 loss against ADO Den Haag.Seip since then established himself in the first team, forming a central partnership with Ismo Vorstermans.Seip also scored three goals against RKC Waalwijk and SC Heerenveen (both fixtures in the league).