Manchester United boss Sir Alex Ferguson says Bebe has made a positive impression since his shock arrival from Portugal.
It had been suggested the 20-year-old had been a major disappointment since his £7million arrival from Vitoria Guimaraes and that Ferguson had made a mistake investing so much in a player he had never actually seen.
However, the Scot dismissed those "vicious" claims and insisted Bebe is on track.
"Bebe is on a programme doing endurance work because his fitness levels are not near the ones we are at," said Ferguson.
"Other than that he has done well. I know he has had a couple of vicious attacks on him for why he wasn't playing in the reserve game but he was never going to be playing on Tuesday.
"The boy did not deserve that.
"He is a young man trying to make his way in football. They didn't need to do that. It was a really bitter attack. Ability-wise he is excellent. He is a terrific finisher.
"We have been very impressed with that. It is just the fitness levels he needs to get to."