Ravel Morrison was better than Adnan Januzaj and Paul Pogba at Manchester United's academy, according to Old Trafford centre-back Rio Ferdinand.
The United defender believes Morrison, who left the club for West Ham United last year after a series of disciplinary problems, was more talented at youth team level than Januzaj and Pogba.
Januzaj made his Premier League debut for David Moyes this weekend, and impressed in his second-half cameo.
The Belgian international was named the club's Reserve Team Player of the Year last term, and made a positive impression in preseason.
Pogba meanwhile was another one to get away - Sir Alex Ferguson let the French midfielder leave for Juventus on a free transfer last summer.
The 20-year-old centre-midfielder has gone on to win caps for France, and is now an established part of the Juve midfield alongside Andrea Pirlo and Arturo Vidal.
But Ferdinand believes Morrison was further along in his development at United at a younger age than Pogba and Januzaj, although he's since been surpassed by the pair in the last few seasons.
Ferdinand tweeted: "Adnan and Pogba were not as good at youth team level as Ravel but by 18yrs old they had progressed further football wise."
And he went on to say: "Having all the ability alone is not enough. You need the right attitude and work ethic to go with it."
Januzaj replaced Ashley Young for the last 25 minutes against Crystal Palace on Saturday afternoon, and the 18-year-old did his first-team chances no harm with several neat touches and slaloming runs.
United beat Palace 2-0 at Old Trafford - a penalty from Robin van Persie and a free-kick from Wayne Rooney enough to take the three points.