On another desperate day for United, Buttner was one of the few who emerged with any credit.
In the first-half particularly, he exploited the space down United's left flank, delivered a superb cross for Javier Hernandez's equaliser and created danger for Swansea on numerous other occasions.
"The players know that I will always try to cross the ball, which is why Javier got his goal," said Buttner.
"It was nice to play. I want to play every game. But it is hard because we lost. If we win, the feeling is different."