"If Liverpool can get some impetus, then we don't know how Manchester City will react under pressure if a team can stay close to them at the end of the season".
Fred has been the only main addition to United's starting XI while the likes of Lee Grant and Diogo Dalot only add cover.
And Scholes feels United don't have enough quality in their squad to compete with their two main rivals.
"It is time for me to stop thinking about the market", he said.
Jose Mourinho has hit out at the perceived negative coverage of his tenure at the helm of Manchester United, stating that he believes finishing runners-up in the Premier League last season is one of the best achievements of his career. United finished above them last season.
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"So I hope I'm wrong, but I don't see them challenging for the league this year".
But Mourinho has been keen on bolstering his squad further after they finished second last season, 19 points behind champions Manchester City.
"Having sold Alexander Mitrovic to Fulham for a fee reported to be in excess of £20m I am slightly surprised that Rafa Benitez does not have a replacement already through the door at St James Park although West Brom's 29-year-old striker Salomon Rondon has been strongly linked to the club". It takes into consideration a team's form, opponents the team still has left to play, and how well the team has done in previous seasons.
"Or they are investing massively like Liverpool, who are buying everything and everybody".
Leicester manager Claude Puel speaking to Sky Sports News on United's interest in Maguire: "For me it's good for Leicester to keep a valuable player, and it's important to show good ambition for the next season".
"It looked like I was saying something absolutely out of order, something insane, I repeat: Pre-season hard when you don't have your players to work, that's as simple as that".