The 37-year-old, who came out of retirement at the beginning of January, revealed that he did have concerns over talking to Ferguson.
"I ended up playing in some practice games and was getting fitter and fitter, so I went to see the manager," Scholes said.
"How did I feel? Scared. I wasn't sure what sort of reaction I would get. I told the boss I wanted to play again, not necessarily for United – just play again. He was brilliant. After that, telling my team-mates or actually going back out on the pitch was never a problem."