Visitors come from behind to remain unbeaten at the summit
The United manager paid tribute to his fellow Scot, whose future has been the subject of much media debate.
Speaking to ESPN, Ferguson was honest in his appraisal of his team’s first half display.
“The first half we were battered, and we couldn't handle Charlie Adam, his corner kicks are worth £10m,” he said.
United trailed 2-0 at the break and Ferguson made changes to his side which altered the course of the game.
The experienced boss brought on Ryan Giggs for the ineffectual Darron Gibson and later replaced Wayne Rooney with Javier Hernandez. It was this substitution that kickstarted the red revival.
Ferguson added: “We changed it at half-time, brought on Ryan Giggs, started to penetrate and, in the end, ran out deserved winners. The team kept going, playing their football, penetrating, and they got their reward for that.”
Ferguson, whose team are now five points clear of Arsenal at the top of the Premier league and remain unbeaten, reserved special praise for his young Mexican forward.
He continued: “His [Javier Hernandez's] pace and timing of the runs are fantastic. He is so good at the end, [he] could have scored four goals. He has made a tremendous impact.”