As a center forward he scored a total of 185 goals for Gent.

This makes Maurice still one of the greatest goalscorers AA Gent has ever known.

He is also one of the 5 players from AA Gent who managed to become national top scorer.

Willems made his international debut on 14 October 1956 in a 2–3 friendly defeat to the Netherlands and he scored.

This biographical article related to association football in Belgium, about a forward, is a stub.