But the burly Brazilian is vowing to return to the
lean, mean figure that wowed fans at Porto before his move to Old
Trafford in 2007.
Anderson has failed to deliver a goal threat from
midfield with just one strike in 96 appearances - in United's 3-1
victory at Spurs earlier this season.
He admitted: "I'd be lying if I said I wasn't
disappointed in my goal performance at United. In fact it makes me
sad.
"And one of my first objectives is to get back to the
condition I was in at Porto, then start scoring goals which decide
matches because that's vital for any player's career.
"I know that a footballer of my ability, who is
accustomed to playing an attacking role and is used to scoring
goals regularly, must be sad to only score a goal every six
months.
"But I must not let myself feel dispirited. I need a
run of games where I'm doing well."
Anderson, 21, knows he could struggle to stay in the
first team unless he produces some explosive form soon - especially
after United's shock 1-0 FA Cup defeat by Leeds.
And the midfielder, who came to England in a £35million
joint deal with Porto team-mate Nani, is well aware bigger names
than him have tried and failed to make the grade at Old
Trafford.
He added: "Some great players haven't managed to do
well at United because it's such a demanding club.
"I know you must have a big heart. It's what the guys
who have been here the longest pass on to us. We are trying to get
into football's history books - that's part of what makes United
the way it is."
Anderson faces a battle to win over Alex Ferguson and
the United faithful once and for all. But he is used to tackling
challenges head-on.
He revealed: "I grew up on Rubem Berta in Porto Alegre,
which is a very tough place.
"Very few manage to live a good life unless they take
up the drugs trade, are good students or play football.
"I wasn't a great student and drugs weren't for me
because I didn't want to die young. I just preferred to play
football.
"At 13, I was already part of the Brazil youth team. By
then I was really street-smart and knew what I wanted."
Anderson also revealed the part former United star
Cristiano Ronaldo played in persuading him to come to Old
Trafford.
He said: "Ronaldo was always telling me 'Come over here
because you are the type of player for Manchester United'.
"I was having a great season for Porto, playing really
well and we were about to play Chelsea in the Champions League when
I broke my leg.
"That was the most difficult moment of my life. Then
five games after my return, I moved to United. It was out of this
world."
United face Birmingham tonight and boss Ferguson has
accused Brum's former owners David Sullivan and David Gold of
holding the club back.
They ran the show at St Andrew's until they sold to
Carson Yeung in September.
Fergie said: "The old regime were set in their ways
about financing the team.
"There never seemed to be any understanding how big
Birmingham could be."