He admits he can't understand Twitter.
But Ferguson told the Daily Mail: "I donâ€™t understand it and I donâ€™t know why they do it. I canâ€™t understand why people can bother themselves with it, to be honest. As long as they donâ€™t talk about the team, and heâ€™s well aware of that, then itâ€™s OK. I donâ€™t think we can stop him."