It was during his three years at Antwerp under the guidance of coach Harry Game, that Van Moer, against his wishes, was moved from a wide right role to central midfield, preparing him to eventually succeed to another of Belgium's most celebrated players Jef Jurion, in the national team.

After Belgium had defended stubbornly in a goalless quarter final, first leg in Italy, he scored the opening goal midway through the first half in the return at Anderlecht's Constant Vanden Stock Stadium.

On the stroke of half-time, Mario Bertini's lunge resulted in a broken leg for Van Moer, a bitter-sweet day for the home nation who ultimately celebrated a 2–1 victory.

Van Moer also performed key roles in home and away victories over Scotland, which propelled Belgium to qualification for the Finals tournament in Italy.

Striker Horst Hrubesch may have scored two goals to secure final victory for West Germany, but for many the outstanding player of the tournament was the Belgian central midfielder with the seemingly boundless energy.

He ran the show in most every game he played, scheming, prompting and holding the ball, never wasteful his performances were as dynamic as they were inspirational as Belgium went all the way to their only major Final.

Van Moer was arguably the most influential player in the tournament and indeed at 35, his performances earned him fourth place (equalling the best ever showing by a Belgian) in the Ballon d'Or poll.

Named captain in the absence of Eric Gerets, for the second-phase game against Poland his international career ended when replaced by François Van der Elst at half-time.