Ferguson signed Bruce from out of the old Second Division when he was with Norwich City.
Bruce told Absolute Radio: "Yeah, he used to bark a lot at me, he used to bark at myself and every one of us. I mean, the biggest thing I can say is that he brought me there, he brought me there and made me captain of one of the biggest clubs in the world, and for that I'll always be grateful.
"He was a wonderful manager to work for, had us all in the palm of his hand, and has proved to be arguably the best manager there's been, and certainly to work under him and see how he works I can understand how he's done it."
Listen to Sunderland vs Man United today only on Absolute Radio extra - on DAB Digital Radio, 1215AM and online in the UK from 1.30pm. Tune in to the post match reaction with Ian Wright at 5pm and to listen to the Steve Bruce interview. For more go toabsoluteradio.co.uk.