Bryan Robson says the Brazilian is the best buy of his managerial career.
The big-spending Teesiders beat a host of top European clubs to his signing when Manchester United legend Bryan Robson convinced him to arrive on Riverside.
He cost £4.75 million and soon became a firm fan favourite with Boro fans.
The attacking midfielder showed a compassion for the fans not see in the modern game. He was also a superstar, playing for the Brazilian national team at the same time. he was soon courted by clubs around Europe.
He eventually left the club - joining Atletico Madrid for £12 million but he went on to have a further two spells with Boro. He ended up playing 126 times for the club and is now firmly places in club folklore as a legend.
And given it is a special anniversary the man who brought him to the club has paid homage to him on Twitter today.
Robson, who managed Middlesbrough between 1994 and 2001, has now stated that Juninho is the best signing he has made in his managerial career.
Not many Boro fans would disagree with that.