Enrique played under Robson while he was in charge at the Nou Camp in the 1996-1997 season and he says his former manager's passion for football was inspirational.
The Football Association have marked the anniversary with the Sir Bobby Robson National Football Day and a grassroots event next to Ipswich's Portman Road.
Enrique, meanwhile, who has brought his Barcelona team to train at St George's Park, told the FA website: "As a manager, he had very clear ideas, with an attacking concept of play and an easy and clear philosophy.
"His natural way of doing things, being very spontaneous, being capable of managing a group, being able to adapt himself to the high expectations of a big team with different circumstances.
"I remember that at half-time he used to grab some plastic glasses to show us the tactics and movements he wanted to see. He was a very talented and easy going person."
It was Enrique's first season as a player at the club and, for that reason, he has special memories of Robson.
"It was a year where we won three trophies, one Cup Winners' Cup, one Kings Cup, one Spanish Super Cup," he added.
"It was a difficult season because it was the year after [Johan] Cruyff had left, and Barcelona decided to sign the services of Robson and his great experience. I think he reached the full expectations.
"I used to appreciate his words of praise, because it was my first year at Barcelona, a very important year for me, and I have to say, I always had a good relationship with him and he always had good things to say about me and that's always nice."