Speaking after Man United's 2-0 loss to Tottenham Hotspur, Erik ten Hag told the BBC: "I like the first half, it was a very good performance from Manchester United in the first half, except, we have to score.
"We created good chances, we had a really good press on the ball, we let them run, we had many good switches, we had many good chances to score a goal, and we deserved a penalty. I don't know why it's not.
"Absolutely a penalty. He changes the direction of the ball and his hand is blocking high above. But OK, you have to accept it. I thought the midfield was good. But of course, you can always do better, but we go for goal and of course you leave gaps.
"But that had nothing to do with the midfielders, that was more to do with our rest defence. We can always do better and leave spaces when you go for goal."
In his defence, Man United did actually play good football in the first half, but failed to take their chances and weren't helped by a clear penalty being denied.
Ultimately, it's the gaffer job to ensure that Man United are more clinical and can take their chances better going forward, or else it can be a long season ahead.