The defender fired home an extra-time free-kick to secure the title, and the 49-year-old looked back on the achievement with immense pride and satisfaction.
“It was a magical, unforgettable night and a memorable goal," the current Feyenoord boss told Spanish newspaper El Mundo Deportivo. "The fact that it was Barca's first European Cup made it even better.
"That goal at Wembley is where everything began. That win gave us a tranquility and a confidence to maintain a style that is now admired around the world; and I think will be forever."
Koeman then took his time to comment on coach Pep Guardiola's decision to step down as head trainer of Barcelona.
"I am not surprised at all [by his decision to leave]. I have spoken to him several times over the past few years, and he always said he did not want to be Barca's [Alex] Ferguson.
"Only those who are coaches, or who have been at the club, know that the pressure there is very big. It must have been hard for him."
Koeman then went on to refuse to rule out a potential future move to the Catalan club in a coaching capacity.
"Who does not want to coach Barcelona? I love coaching and I love Barcelona."
Ronald Koeman played over 250 games for the Blaugrana between 1989-1995, becoming an integral part of Johan Cruyff's 'Dream Team'.
He enjoyed a superb first campaign as Feyenoord boss, guiding them to second place in the Eredivisie and also collected the Coach of the Year award.