Newly appointed Manchester United manager, Jose Mourinho has stated he will not let his personal feud with Guardiola escalate.
The pair have a frosty relationship from their time in Spain, and Guardiola will be taking over at Manchester City come next season.
Despite the history of acrimony, Mourinho insisted he will not instigate more rivalry when he starts work at Old Trafford.
Speaking at Lisbon University, the former Chelsea manager said: “My experience does not allow me to be innocent.
“I was with Guardiola for two years in a league where either he or I would be the champion. Here, if I focus on him or he on me, the champion will be another (manager).”
Mourinho has been linked with a move for Sporting Lisbon midfielder Joao Mario but insists he has no intention of prising players from Portuguese clubs.
“I will not take anyone from here,” he added.