The signing of this 23-year-old left back may surprise some, but he's an important acquisition.
United were linked with Leighton Baines this summer (via ESPN), but an inflated price put the Red Devils off. Instead, this exciting young Dutch prospect was brought in for £3.9 million as Patrice Evra's immediate understudy (via The Independent).
I believe he deserves an instant chance to make an impact. With Fabio loaned out to QPR for the season, Buttner has a real shot at challenging Evra for a starting birth.
If the Frenchman's performances are anything to go by, he doesn't deserve to be in United's starting lineup.
For too long, Evra has been regularly caught out of position, given the ball away in vital areas and failed to pick up players he should be marking.
To make things worse, he only has three goals in nearly 300 appearances for Fergie's side. His bursts up the left wing very rarely produce assists and often leave the team exposed.
Against Everton, it's fair to say Evra's presence was non-existent at best. He doesn't look interested and no longer has the capability to exert his influence on the younger players.
Buttner may be unknown to many, but this winger-turned-defender has attacking urges that his nearest rival will never possess. He scored five goals last season for Vitesse and could do a lot more damage with United's players around him.
Buttner is still a raw talent, but United's "other" Dutchman could excite against Fulham. That is, if Fergie is bold enough to drop his consistently lagging favourite.