Aston Villa boss Alex McLeish doesn't want his players to be afraid of tackling Ashley Young and his Manchester United team-mates.
Villa will come up against their former player on Sunday when the two sides meet at Old Trafford in a game that both want to win for differing reasons.
Young was at the centre of a controversy last weekend when he earned a penalty against QPR which helped his side to a 2-0 victory and saw Rangers captain Shaun Derry sent off.
Derry appeared to make minimal contact at Old Trafford but referee Lee Mason pointed to the spot and Wayne Rooney converted the 15th-minute penalty.
Mason's call is one of a number of disputable refereeing decisions recently and McLeish has also had reason to be annoyed of late, blaming a foul in the build-up for Stoke's goal in their 1-1 draw on Monday.
But the Villa chief remains philosophical about such turning points.
"These are the things that you can't legislate for on a Saturday," he said. "You can't prepare the team for that.
We've often said in team talks 'look, we're looking for you to be at your best performance level, to work your socks off for the team from start to finish', but sometimes even if you do that it can be out of your hands and you can lose a goal to a decision you think you've been wronged by.
Referees are going to make mistakes but last week was a tough weekend for them."