Liverpool striker Peter Crouch accepts he must alter his game when playing in the Champions League.
"I always feel that I get penalised far too much when I'm playing in Europe or playing for England," Crouch told the Sunday Express.
"It is totally unjust because I think I play completely within the rules. I feel I have been targeted by referees.
"Knowing what I know now, I suppose I will have to adapt for the games in the Champions League and for England. I will have to become more clever."