The Argentina international impressed the Catalan club when Inter came face-to-face with Barca twice in the Champions League group stage.
He scored in a 2-1 defeat for Inter at the Camp Nou in October, before setting up Romelu Lukaku’s strike in another 2-1 defeat to the Spanish champions on Tuesday in Milan, which saw the Serie A side crash out of the competition.
The 22-year-old’s agents were in Milan this week to hold talks with the club.
It is understood that they hope to negotiate a new contract which would double his salary, which is currently worth €2 million per year and runs until 2023, but Inter would prefer to offer a smaller wage hike.
The Italian club want his release clause to be raised from €111m to €200m, but Martinez’s agents would prefer for it to stay as it is.
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