Berg won two Premier League winners medals with Manchester United, and believes Jones is moving to Old Trafford at the perfect time.
He told the Lancashire Telegraph: "It is a fantastic move for him. I don't think there will be too much pressure on him, even at such a big price, because he is so young. No one will expect too much from him.
"He will be given time to grow into the club. If he left it a few years there would be more expectation on him. When he does get his chance though it is important he takes his chance.
"Rovers can add three or four players with the money they get and that has to be a good thing for the club."