Sir Alex Ferguson has revealed how Anderson arrived at Manchester United with a glowing reputation, and was touted as being even better than Wayne Rooney, reports the Daily Mail.
The Brazilian midfielder joined the Premier League champions from Porto in a £17million deal in 2007, having been scouted extensively by the former Red Devils boss' brother, Martin Ferguson.
Anderson has failed to ever really establish himself as first-team regular in the Manchester United side, despite the fact he was tipped for a bright future in the game.
"I sent Martin to watch him in every game for four or five weeks," recalled Sir Alex in his autobiography. "Martin said: 'Alex, he's better than Rooney'.
"'For Christ's sake, don't say that,' I told him. 'He'll need to be good to be better than Rooney'. [But] Martin was adamant."
Since the appointment of David Moyes, Anderson's contribution has become even more infrequent, as he continues to play on the periphery of the senior squad at Old Trafford, even now with the team stretched in midfield with a series of injuries.
A January exit has been mooted for the 25-year-old, when the transfer window reopens, while Rooney's importance and first-team influence has increased at Manchester United year on year.