Former Norwich striker Joe Royle's arrival as manager a year later saw Wilnis get his chance once more. He was a regular during the season, mainly at right-back whilst also often playing at left-back and latterly at centre-half during the former England striker's tenure as manager. Wilnis scored the opening goal in a 2–0 win away at Norwich City on 2 March 2003. He played a key part in Ipswich's league campaign, whilst also featuring in the UEFA Cup. In total, made 43 appearances during the season, scoring 2 goals.