He told manutd.com: "It is realistic to think we could do it again. We have fantastic players. We have added Dimitar to the squad, who is a fantastic player. We have a very talented squad if everyone stays fit. The Champions League is something we would really like to retain and make history.
"The gauntlet is laid down for us to do it because it has never been done. Winning the Premier League three times on the bounce, no-one has done better than that. The incentives are there. We could make history. It will be hard but that is what being at a club like Manchester United is about. We want to win."