Former Atletico Madrid midfielder Diego is convinced Joao Felix can have a huge future with Barcelona.
The Portugal international is on-loan at Barca from Atletico Madrid.
Diego told Sport: "His quality is indisputable and now at Bara he has every chance of succeeding. He fits in with the game and has all the characteristics to do it well."
The Brazilian also said, "I watch LaLiga when I can, but what I like the most is the Champions League.
"It is always a pleasure to see Atltico de Madrid, I see them strong, always competitive and very good with (Diego) Simeone, who does a very balanced job, transmitting a lot to the team, he has all my respect."