Champions League final frustration to Barcelona.
Ferdinand discovered what Ferguson told in a Q&A with United Facebook fans.
He said: "We never move into particulars about what Sir Alex says in the dressing room, that exactly does not happen. But the core of it was that we'd to discover from it and that Barcelona had set a new bar in terms of the point we'd to aim to and it was now adequate to us to achieve that bar and get beyond it. That is the target now."