Robin van Persie believes Ole Gunnar Solskjaer and Manchester United need to copy the example of Jurgen Klopp and Liverpool to build long-term success.
The former United and Arsenal striker believes the marquee signings of players like Paul Pogba and Alexis Sanchez in recent years at Old Trafford have been symptomatic of the club's lack of strategy.
That is something Solskjaer appears to have addressed in the past 12 months, with United signing Harry Maguire, Aaron Wan-Bissaka, Daniel James and Bruno Fernandes, while bringing through homegrown talent from the academy.
United were on an 11-match unbeaten run at the time of football's suspension due to the spread of coronavirus throughout the United Kingdom and Europe.
But Van Persie believes they have struggled due to not having the philosophy and longer-term stability of a club like Liverpool.
Van Persie told SoFoot: "If you compare it to Liverpool. Jurgen Klopp was appointed and players were selected who fit in with the football philosophy, not from marketing motives.
"They built the club on a coach’s sporting project. At Manchester United they gamble on star names like Paul Pogba and Alexis Sanchez.
"That’s one way. It is risky. If such a player gets injured or does not fit, the whole team is vulnerable, while having a philosophy like Liverpool and not Manchester United creates enormous collective power.
"The challenge for Manchester United is to see if Ole Gunnar Solskjaer can successfully establish a philosophy of his own."
Solskjaer will be hopeful of doing just that when football resumes. United were in the hunt for a top four finish and still competing in the FA Cup and Europa League when the decision was made to call a halt to the season to limit the infectious covid-19 disease.