Bebe admits he was "surprised" to find his name on the list of 25 players that will represent Manchester United in the Champions League.
The £7.4 million summer signing was absent from the first squad list published by UEFA and United but the club confirmed on Monday that the forward will be available to Sir Alex Ferguson.
Bebe - who is yet to make his debut following his move from Vitoria Guimaraes - was signed despite Ferguson having never seen him in action and he has been withdrawn from consideration for the club's reserves, ostensibly to work on his fitness levels.
"I'm surprised by my inclusion in the Champions League squad," Bebe said. "It's a dream for me. I never thought I would have made it, but now I am a very happy man.
"I only hope that my confidence returns when I start playing some games and scoring goals, like I know how.
"At the moment I am working very hard each day in training. I intend to make the most of my chance and hopefully profit from the opportunity given to me."