Manchester United have a duty to entertain' in the Champions League, says former boss Sir Alex Ferguson

Sir Alex Ferguson has told Manchester United they have a 'duty to entertain' when they return to the Champions League next season.

Victory over Ajax in the Europa League final booked Jose Mourinho's side a place in the continent's elite club competition after a year's absence but taking part is only half the challenge, according to Ferguson.

The Scot - United's greatest ever manager who won the Champions League twice - has urged Mourinho and his players to win over doubters and detractors next term.

'The counter attack has become more prominent today; the condition of pitches is superb today; and also the protection of footballers has become more prevalent,' he told UEFA.com

'So a lot of these things add up to what you're seeing as a far better spectacle.

'I think you have a duty and a responsibility to entertain. We have to always remember that there's a public to be entertained.

'In my time at United, it was "as long as you win." If it was 4-3, OK, or 5-4, OK. My last game was 5-5 (at West Brom in 2013).

'I couldn't ask for a better score in my last game at United.