Liverpool have made a big mistake in selling Camacho, according to the youngster’s former manager.
That’s because he has the potential to become as good as Joao Felix, he said.
Felix is one of the most in-demand young players in world football, and is reportedly the subject of a £113m bid from Atletico Madrid.
Liverpool could have had their own Felix in their own ranks, but they sold him to Sporting Lisbon for just £5m.
“It is always difficult to make comparisons,” said Joao Machado, who coached Camacho when he was a youth player at Real Massama.
“I think he has the ability to reach the level Joao Felix currently has, and in terms of characteristics, they are similar players, since they move very well, occupy the spaces very well.
“Rafael can get a little more unbalanced in one-on-ones, but ends up not having the capacity to score as many goals.
“I believe he can get to one of the best clubs in Europe, he may become one of the best players in the world, he can do that.
“Now it is important that he is trusted, played regularly, and I think he has gone to the right club and league to stand out,” he told Desporto ao Minuto, via the Liverpool Echo.
Camacho became increasingly frustrated with Jurgen Klopp over a lack of playing time at Anfield.
He was also annoyed about being played at right-back, in the few occasions he appeared for Liverpool, when he’s naturally a winger.
His move back to Sporting was a “dream come true”.
“Ever since I was at the academy I’ve always dreamed of being able to play the main team someday,” said Camacho.
Meanwhile, Joao Felix is believed to be a target for both Manchester clubs.
The 19-year-old striker scored 19 goals for Benfica last season, including 15 in the Primeira Liga.
He’s now a regular in the Portugal national team, and played alongside Cristiano Ronaldo in the Nations League semi-final victory over Sweden earlier this month.
