Manchester United's back four and goalkeeper David de Gea are the biggest problem for Ole Gunnar Solskjaer according to Roy Keane.
The Red Devils have copped plenty of criticism for their mixed start to the season. Falling behind in games and poor home form have been two of their major issues.
But the former United captain has singled out their defensive unit, which consists of Harry Maguire, Victor Lindelof, Luke Shaw and Aaron Wan-Bissaka, as an issue for Solskjaer.
He has cited their inconsistent nature as a major problem and claimed they are not capable of being a platform for United's success.
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