After an explosive start to his season at Old Trafford he is determined to realise his full potential over many years at the club unlike some he has seen fall by the wayside.
Welbeck added: "It's always going to be really tough to make it at United. If you are coming through the youth ranks you see a lot of people come and go.
"I'm a Manc and I've been a United fan all my life. I'm not just a player, I'm a fan as well, so I just want the best for United.
"Every time I'm on the pitch I'm just going to give it 100 per cent. I've seen players go and I just don't want to do that."