Lukaku joined Manchester United this summer in a deal worth £75million.
He got off to a great start and has scored 10 goals already.
But he’s gone six without scoring and fans have begun getting on his back.
There were even boos when Marcus Rashford was replaced instead of him against Tottenham – before he set up the winner for Anthony Martial.
Mourinho has since described him as untouchable but did take a penalty off him during the Benfica win.
“Jose Mourinho was absolutely right to criticise the Man United fans after the Tottenham game,” Ince wrote in his Paddy Power column.
“Nowadays, fans think they have a lot of power over what goes on in football, largely because of social media.
“I’m not saying that they shouldn’t be allowed a point of view – but the fact of the matter is that none of them are managing a Premier League team.
“When Romelu Lukaku came to Manchester United, and he was bagging goals for fun, no one was saying a thing. Not one United fan was moaning.
“Now, he hasn’t scored in a few games and suddenly loads of fans are on his back. They need to get real.
“We’re talking about someone who has scored 11 goals for United already, and we’re only at the start of November. Let’s get it right.
“So, when I see that Mourinho has had a dig at the fans for booing, I literally couldn’t agree with him any more for doing that. Those fans needed telling.”
Ince thinks United fans have jumped the gun by grilling Lukaku and has called on them to get back behind their star striker.
He added: “When I was playing, even when things were going badly wrong, fans would support their team. They’re called supporters for a reason. And I think there’s a huge difference between ‘fans’ and ‘supporters’ nowadays.
“When you look at Huddersfield fans, they are what you would call a traditional supporter. They stick by their team whether things are going right or wrong. I was at Anfield for the game last week, and they didn’t stop singing, even when they were three goals down.
“Then you look to some United fans, whose side are second in the table, but they were booing their top goalscorer. It’s mental.
“If you’re a proper fan, you can’t just support someone only when they’re playing well. The proper Man United fans will be backing Lukaku whether he’s doing well, or whether he’s having a rough patch.”
Published at Thu, 02 Nov 2017 10:36:07 +0000