The 23-year-old defender was unveiled to the media at Carrington this morning (Friday). Büttner said: "I feel good. It’s a dream for me to play for a big club like United. I can’t wait to play for the team and let people see what I can do. I know I have to wait for my chance. I can learn so much from Patrice and I cannot wait to play with him. It’s a nice club and everyone has helped me settle in."
Sir Alex Ferguson said: "We’ve been monitoring Alex for a while. He’s a straightforward, attacking, quick full-back who will be a terrific addition to our squad. Patrice Evra has played an average of 48 games a season for the last five years, an incredible statistic. He's still a fit lad but he is in his 30s now and Alex gives us good back-up. He will provide Patrice with a good challenge."