Antonio Conte has warned Jose Mourinho not to engage in mind games or technical area bust-ups ahead of Chelsea's visit to Old Trafford on Sunday.
Conte has also dismissed other managers’ attempts to “manipulate” situations as “not important” during games.
The Italian says he is only interested in the game at hand and not any fights or arguements on the sidelines.
Since Conte's side were made media-champions elect, Mourinho has repeatedly criticized the Blues their fans and tactics.
NAIJ.com recalls that the Special One was sacked him for a second time in December 2015.
Conte said: “Look, many coaches try to manipulate the ideas and try to make the other person, not understand, but put the other person in the way they want.
“But it’s not important for me. It’s important to continue to work and have our idea of football.”
Mourinho as unhappy with Conte’s celebrations as Chelsea defeated United 4-0 in October and their war went one step further when they clashed during last month’s FA Cup tie, which the Blues also won by a solitary goal.
Asked if there is any beef between himself and Mourinho, the Italian said: “No, no. I don’t like.
“It’s normal for me and other coaches to have this situation. But if you ask me if I like it or not, I don’t. I’d prefer to be focused on my team and the game during the match, so I can find the right solution if my team is in difficulty.
“I have zero problems. It’s only a sporting competition between him and me. There is a game of football. I want to try and win with my team.
“He wants to try and win with his team. It’s normal to be a conflict during the game, but only a sporting conflict.”