The 51-year-old worked as head of external relations at Barcelona during the legendary midfielder's spell in charge of the Catalans, and has a close relationship with the former Spain international.
A report in La Gazzetta dello Sport this week suggested that Milan CEO Adriano Galliani has met with Estiarte and Guardiola's brother Pere to talk about the ex-Barca coach's plans for the future, but he has remained coy on whether the meeting took place or not.
"Did I speak with Milan about Guardiola? It's not up to me to answer that question..." the 51-year-old said at the World Business Forum.
|16/1||Pep Guardiola is 16/1 with Paddy Power to take the AC Milan job as his next move|
Estiarte also took the time to respond to Inter president Massimo Moratti's recent claims that Barcelona are a boring team.
"I admire Moratti and I was surprised that he said something like that. He can say that he doesn't like our style of play, but it's a bit disrespectful to say that Barcelona are boring."