Bruna have signed a three-year contract with Liverpool after rejecting professional terms at Real Madrid.
Real Madrid youth coach and former Spanish international Michel said: “I was very surprised when Bruna left because he had been with us for three years and as soon as he was about to mature, Liverpool took him from us.
“That is what happens all the time in England. When they see someone they like, they just take him.
“They sign the boy to a professional contract, make all sorts of promises and then put him in their reserves and never give him a competitive game.
“How many young players taken by Liverpool, Chelsea and Arsenal have actually played for their first team and how many have returned?”