United won the match 1-0 after a penalty goal from the Argentine striker.
“He worked his socks off, he was terrific,” Ferguson told Sky Sports News. “I thought he was our star man tonight i though he was absolutely brilliant.
“He needed the game as he needs some minutes on the clock.”
Ferguson also took time to praise young striker Danny Welbeck. Welbeck came on as a sub and won United a penalty.
“Danny is an exceptionally talented young lad,” added Ferguson.
“He has been troubled by a groin injury recently and only played his first game back at Celtic in a reserve game last week.
“He is probably a bit short in fitness terms but he made a difference when he came on.”