Welbeck and Cleverley have made a big impact this season.
He told manutd.com: "We've been playing with each other since we were little kids. Just to come through to the first-team is a big positive. We're good friends on and off the pitch, we've got a good relationship. We've been at England Under-21s together and, if we're rooming, it's us two together. We are close friends and have got a good understanding on the pitch. He knows my game and I know his. He's come up through the same Academy, with the same coaches and it's great."