In United’s seven Premier League games so far, 15 outfield players have started – and Scholes believes this has led to mixed results, including two defeats and a draw.
In contrast, Mourinho used 21 outfield players in the whole of his 2004-05 and 2005-06 title-winning campaigns with Chelsea. In 2014-15, when he won the league with the Blues for a third time, the figure was 19.
“He was not ruthless enough in the off season,” said Scholes, who made 718 appearances for United after making his debut in 1994.
“There is so much confusion about who should play.
“What I saw of Mourinho at Chelsea, he had 13 or 14 players who played every week. He never rested players even in the League Cup or whatever competition he was in.
“With United it is still a settling-in period – it is going to take a bit of time for them to knit together and see what they are about.
“Is there an identity to the team yet? I don’t think there is.”