Earlier this week, Mourinho revealed what the presidents of Sporting and Porto had said to him:
"The conversation with presidents (Federico) Varandas and (Andres) Villas-Boas was very simple. They said 'good luck, but I hope you finish second.'
"If I had been invited to coach there, I honestly don't know if I would have accepted, but considering how quickly I said yes to Benfica, I'd say no."
Mourinho has said he has not rejoined Benfica "to wage war" on his former club FC Porto or on Portuguese champions Sporting CP and that he is there to help Benfica win the Portuguese title once again.
The 62-year-old has certainly ruffled a few feathers however and Villa-Boas has hinted about the hospitality Mourinho might receive at Dragao which he says will not be pleasent.
"I think José Mourinho has a history with Porto that will always be eternal. He could also be eternal at FC Porto, but he is above all a football professional, so he has to make his decisions as a football professional and follow his path.
Right now, he is a rival of FC Porto, he is the coach of Sport Lisboa Benfica. FC Porto's history also became great because he won against its biggest rival, and in that sense, Jose Mourinho will now receive the same reception as any coach of our main rival, that is, the coach of Benfica."
When questioned on if he will be applauded due to his success with the club over two decades ago, Villas-Boas said: "Certainly not."
Mourinho should expect a frosty reception when his team travels to the Dragão stadium on October 5th to face Porto in the league in what should be an entertaining clash.