Premier League champions Manchester United have been advised to spend big by an unlikely source: former Manchester City manager Roberto Mancini.

The Italian, who now works for Turkish giants Galatasaray, believes the Red Devils must restructure their squad in order to remain competitive at the top of the Premier League table.

"Chelsea changed and bought some new players, City bought four or five new players," Mancini told BBC World Service. "After many years, it's the time [for United] to refresh the team."

United have struggled this season and now look almost certain to lose their grip on the Premier League title.

Currently 14 points behind league-leaders Arsenal, and six points behind fourth-placed Liverpool, the Red Devils' primary objective now is to secure qualification for next season's Champions League.

United boss David Moyes has come in for criticism in this, his debut season at Old Trafford, but Mancini believes that the former Everton boss is capable of turning things around.

"I think there is a good chance for him - he worked for 10 years at Everton and he did a really good job," Mancini added. "He is a good manager and I don't think he needs my advice."

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