Ramon Diaz has insisted that he will not be on speaking terms with his close friend Dunga on Saturday, as the two managers face each other in the Copa America quarter-finals.
The Paraguay coach maintains a close friendship with the 51-year-old Brazilian coach, after they both played in Serie A in the late 1980s.
However, Diaz claims that the friendship will be put to one side as they lock horns on Saturday evening.
"It's not a friendship from now but from a long time ago," Diaz told reporters.
"We have been out to eat together a lot of times and we have a great relationship.
"Dunga is a great coach and I congratulate him because he has changed Brazil a lot. They will be a tough and difficult rival but friendship doesn't count here."
The winner of the tie will go on to face Argentina in the semi-finals of the competition.
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