Young is set to return from injury this week against Europa League opponents Ajax.
He told manutd.com: "The spirit that we have shown throughout the season has always been there. From when I first joined the club you could tell there was a team spirit that went from the dressing room out on to the pitch.
"At my previous clubs that has not been the case but I think you should always play to the final whistle, knowing you are going to create more chances. Until the final whistle goes there are always chances to be created and I think that's part of United's philosophy."