Dier is one of the best young players in Europe and had a great season for Tottenham in 2015-16.
The 22-year-old, who can also play as a defender, will be a key player for England at the Euro 2016 finals in France.
Former United star Robson has praised the Tottenham star, and he has also underlined a difference between midfielder Dele Alli and Jack Wilshere.
Tottenham’s Alli and Wilshere of Arsenal are both in the England squad for the European Championship in France this month.
“He does that sitting role very well and the Tottenham man is a real steady Eddie,” Robson told The Sun about Dier. “It’s not showy, it’s not going to get you off your seat, but it is so crucial in the modern game. Dier is a commodity we have not really had in the past.”
“Alli has the potential to be a Bryan Robson or Roy Keane, not that the old box–to–box player is that fashionable now!” added Robson. “He has the energy, is inventive, thinks fast, sees a pass, can score a goal and can get up and down the pitch.
“I don’t think Wilshere can defend as well as Alli when the other team have possession,” continued the former England international midfielder. “But I do think he is great on the ball and I thought he made a difference when he came on against Portugal in the last warm-up game.”
Alli scored 10 goals and created 55 chances in 33 Premier League appearances for Tottenham this past season.
The 20-year-old former Milton Keynes Dons midfielder had a pass accuracy of 76% and a shot accuracy of 60%, and won 36 headers, 30 dribbles and 53 tackles.
The Tottenham star is likely to start for England at the Euro 2016 finals, while Wilshere is probably going to feature as a substitute.
The Arsenal midfielder did not play much this past season, but he remains a talented footballer who can be an asset to Roy Hodgson’s team in France.