Wayne Rooney believes Cristiano Ronaldo will cope with any hostility from fans as he continues to come under fire following England's World Cup exit.
Ronaldo and Rooney clashed at the World Cup in Germany
Ronaldo was booed by rivals supporters when Manchester United faced Oxford United in a friendly on Tuesday.
But Rooney told BBC Radio Five Live: "It was disappointing to see that happen because he is a great player.
"In the last two years he has been booed at away games but I think he can come out of it a better player."
Rooney also confirmed again that he had settled any issues he may have had with his team-mate, who appeared to encourage the referee to send him off in the World Cup quarter final between England and Portugal.
"He's a good lad and we've got no problem with each other now. We're fine about it," said the England striker.
"I spoke to him on the night after the game. I'm not going to lie, I was disappointed with the way he ran over to the referee.
"But at the end of the day, we weren't team-mates that day. We were rivals. I wanted to win, he wanted to win for his country so we have to get on with it and hopefully do well for Manchester United together."
Ronaldo's behaviour in that match and accusations that he had faked injury and simulated fouls is thought to have cost the winger the award for best young player at the World Cup.
Germany's Lukas Podolski took the title.
"He should have won the young player award at the World Cup but because of the criticism he got it was taken away from him," added Rooney.
"I was disappointed for him, I think everyone at the club was disappointed for him.
"He had a good tournament and I don't think he should have had it taken away for him because of that."