Manchester United legend Bryan Robson believes his former club can win the title if they sign two of three world class players.
Louis van Gaal's side are in a firm position to finish this season in the top four after a disappointing campaign under David Moyes, where they finished seventh on the table last season.
Real Madrid star Gareth Bale, Memphis Depay PSV Eindhoven and Germany's World Cup winning defender Mats Hummels are all linked with a move to Old Trafford in the summer.
The former United midfielder heaped praise on the Dutchman for helping United to bounce back this season, despite struggling with injuries throughout the campaign.
"We've proved this season that we are not far away as far as the Premier League is concerned. Yes we are a good number of points behind Chelsea," Robson told the Manchester Evening News.
"But you look at when we beat City by 11 points, they went on and won the title the next season. If we bring two or three real top class players into the squad it will mean the lads can go and be successful."
"I look at the injuries this season and it's unbelievable the amount of injuries that the club have had."
"But they have coped with it and going into the last four games, we are still in a good position for a Champions League place which has got to be paramount for the club," he added.
In United's recent success, midfield trio of Juan Mata, Ander Herrera and Marouane Fellaini have been exceptional in the last two months. Their winning streak ended after Chelsea sealed a narrow 1-0 victory at Stamford Bridge.
Robson praised their performance on the pitch as Michael Carrick's absence cost the 20-times English champions three points against Chelsea.
"Herrera, Fellaini and Mata have played really well over the last month or so and are finding their feet at the club which is pretty good," the former United captain explained.
"The one thing I think the Chelsea game showed, and it's happened before, is that we miss Michael Carrick when he doesn't play. It means Wayne has to drop back into midfield and then we miss Wayne up front too."