The Rome-born striker rues the expectations placed on him after his whirlwind start to life at Old Trafford and admits to hardship, but leaves the door open for a return later on
The Italian is widely remembered for his heroics from the bench against Aston Villa and Sunderland in April 2009 that helped spur Sir Alex Ferguson's side on to the league title as an unknown teenager.
Macheda has since endured a succession of unsuccessful loan spells in an effort to develop and recover his early magic, most recently landing in Germany with Stuttgart in January, and he wants to finally leave Old Trafford for good and begin his career in earnest.
He told the Daily Mail: "Manchester United was more difficult than any club in the world because of the talent of the players there and because of the attention and the pressure.
"It wouldn’t make sense to go back and do what I have done for the last two years. Maybe in the future I could go back, but not now.
"I was only 17 when I made my debut, though, and when I scored those goals people expected me to become the new Wayne Rooney; the next big thing. How could I when I wasn’t even playing every game?
"So that bit was not easy to cope with. When I look back, though, I am still happy about it. It was a fairy-tale.
"After Manchester it has been a struggle. I have had injuries and loan spells and they haven’t really worked.
"But I am adapting now here at Stuttgart. That takes time. The important thing now is to find my place; get some playing time and develop as a player."