Sweden's Frisk retired from the game after receiving several death threats following the Champions League quarterfinal first leg match between Barcelona and Chelsea in 2005 after he sent off Chelsea striker Didier Drogba.

Mourinho stoked the fires by saying he had seen his Barcelona counterpart Frank Rijkaard go into Frisk's dressing room at half-time -- something strongly denied by both men.

"There are a lot of managers who I can say behave well but there has been a trend in the last three years for some managers to adopt a mentality has not been so good. It's not a good image for football," Frisk told feelfootball.com.

"I suffered from that and a lot of people are still suffering from that. You can see every week that they are creating a conflict before a football match, as if it was a boxing match, and I don't like it.

"I'd like to see that kind of attitude removed from football."

Mourinho has become notorious for working with the media to get into the psyche of rival managers but Frisk, who was speaking on conduct and behaviour in football as part of the Survey on Feel Football this week, believes the Portuguese manager has pushed things too far.

"He (Mourinho) has to take responsibility for his actions and to think what will happen as a result of his actions," Frisk said.

"He needs to think what would happen if he acted differently because, if he does, I think he will be much more popular than he is at the moment."

Frisk's retirement drew widespread disbelief in the European football community and UEFA slapped Mourinho with a 9,000-pound (18,000 dollars) fine and two-match touchline ban for the "false comments" connected with that Barcelona clash.

Frisk refereed 132 international matches and appeared at three European championship finals (1996, 2000, 2004) and one World Cup finals (2002).