Wolves boss Mick McCarthy stunned Wolves fans by making 10 changes in his starting line-up to the team that managed to beat Tottenham at White Hart Lane on Saturday.
“It was a difficult night because Wolves made it very difficult for us,” Ferguson told Sky Sports
“They pressed every ball, they tackled everywhere and they put up a good show considering they put most of their second string out, which wasn’t surprising given that they’ve got Burnley at the weekend.
“We took a long time to get our game going,” the United boss added. “I think the changes we were making are not giving us the continuity of performance and that was reflected in the way we started.
“But once we got the goal we were comfortable enough, it ended up we could have scored more but I’m happy enough with the result.”
Ferguson also praised United duo Antonio Valencia and Dimitar Berbatov for United’s third goal.
“It was beautiful,” said Fergie of his side’s third goal.
“It’s only a player like Berbatov, with that kind of imagination and skill to do that, and it was a very good finish from Valencia and that gives him six goals now and we’re pleased of that because that’s the area we want him to improve and he can improve.”