United face their rivals at Eastlands on Saturday.
“I have no regrets whatsoever,” said the United boss.
“There is no bitterness from me.
“Players leave here from time to time. Some do well, others don’t. We move on.”
“Carlos had a good first season with us, I must admit,” added Ferguson. “In the second he didn’t feature in as many games.”
He conceded: “I cannot dispute that he is having a great goalscoring season.”
