With Manchester City looming, there's been suggestions Ferguson will select a full-strength line-up to keep the Blue half of Manchester in their place.
But Welbeck believes he and the likes of Federico Macheda, Darron Gibson, the Da Silva twins and Ritchie de Laet can lead United to Wembley - and wants to be given the chance to prove that against Mark Hughes' moneybags side.
He said: "It's a competition where the boss likes to give the youngsters a chance to show what they can do and what your abilities are.
"It's a different level and all the younger players who are selected relish the challenge.
"It was the first trophy I'd won with United's first team and it was such a great buzz. Just to win a trophy at the biggest club in the world was massive. I just want to feel like that again, year after year."