That is the belief of legendary former manager Sir Alex Ferguson.
Jose Mourinho’s side have drawn seven of their last 11 home games in the top flight.
And while they remain unbeaten in the Premier League since October’s drubbing at Chelsea, United still sit outside the top four.
Antonio Conte’s Blues have enjoyed consistent success in comparison, having gone on a 13-match winning run earlier this term.
Jose Mourinho has been left frutsrated at Old Trafford many times this season
Chelsea hold a 10-point lead to second-placed Tottenham, while United are 17 points off the pace.
Mourinho has enjoyed a decent first season in charge at United, having lifted the EFL Cup and Community Shield.
But Premier League progress has been slow-going, and 13-time Premier League winner Ferguson insists the Old Trafford failing are to blame.
“I get on well with Jose and think he’s doing a really good job,” Ferguson told US radio channel SiriusXM FC.
Manchester United have failed to beat Bournemouth, West Ham, Hull, Burnley and Stoke at Old Trafford
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Sir Alex Ferguson has been consistently watched Manchester United this season
If they’d got those wins they deserved they’d be challenging for the league
Sir Alex Ferguson
“He’s been a bit unlucky actually because there are home games this season they’ve been absolutely brilliant in but have drawn them.
“If they’d got those wins they deserved they’d be challenging for the league, there’s no doubt about that.”
Champions League qualification is still achievable for United though, with a top-four push ongoing and a Europa League quarter-final awaiting.
This Saturday (3pm), Mourinho and Ferguson will hope Manchester United do not fall short when West Brom visit.