Ole Gunnar Solskjaer believes Manchester United were denied two penalties against West Ham United on Sunday.
The Red Devils claimed a 2-1 victory after David De Gea stopped Mark Noble's stoppage-time penalty.
But Solskjaer thinks his team should have had a greater lead as he claims Cristiano Ronaldo and Paul Pogba were fouled in the box.
"I'm going to be careful with what I'm saying, but you've got to be wondering what's he's got to do to get a penalty," said Solskjaer.
"The first [obstruction by Coufal] and the third [tackle by Ogbonna] is 100 per cent nailed on.
"The one where he gets pulled back backstick [by Cresswell] is probably [not obvious], but it's still a foul, he gets pulled down in the box.
"It's frustrating but they've got to look at it. It's two clear penalties. I think they're stonewall. You can't even argue against them. The first one, he puts his foot out and Ronaldo runs straight and is fouled.
"The last one, Paul had a foul against him on Zouma when he didn't touch him but he went over him. Why is Cristiano's not? Hopefully it won't be that he's never going to get a penalty."
