Giverin has been with United since he was seven years of age.
He told manutd.com: "The first one was Rio Ferdinand, when he first came as I thought he was great as a younger player. The first one I looked up to was Rio but, gradually as I'm getting older, I'm still looking up to Rio but, when I got to 16, Tom Cleverley too. Both for their attitude and skills.
"Technique is one of my biggest strengths and passing. Knowing what to do when I get the ball. I have a vision in my mind where I know what I want to do when I get the ball. Passing and technique but also attitude to work."