Harry Redknapp has said that honesty is the best policy in these situations.
The United boss was unhappy after his side surrendered a 3-1 lead against Leicester City and ended up losing the game 5-3.
But Redknapp has said van Gaal expressing his anger and frustration towards his players will be a good thing in the long run.
“I’m sure it [Van Gaal’s dressing down] won’t do any harm, there will be a few home truths told.
“It’s better to let it all out, than keep it under wraps. People don’t know what you’re thinking then.
“It is better if people express their views to each other.”
Redknapp is aware of United's capabilities after his QPR side were on the wrong end of a 4-0 hammering at Old Trafford not so long ago.
The concern for United isn't their prowess in front of goal, but their lack of solidity at the back with several defensive errors leading to their opponents getting the better of them at times, which in part has led to their slow start to the season - only picking up the one win from their first five games.