Hector Herrera has his heart set on joining Inter as a free agent next season, according to Sportitalia, despite English and Spanish offers.
The Mexico international midfielder will be out of contract in June after six years at Porto.
He has been linked with a move to Serie A for several campaigns now, above all Napoli, Juventus, Roma and Milan.
However, Sportitalia maintain Inter have been working on Herrera since November, while Roma and Milan have turned to other targets.
The 28-year-old is reportedly so determined to come to San Siro that he has turned down a huge offer from a Spanish club.
He is also ready to reject Premier League interest, as well as a new €6m per year contract at FC Porto.
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