The Portugal international has struggled to make an impact at Stamford Bridge since arriving on loan in January but the Blues are unlikely to extend the deal.
Inter also expect the winger to return to the San Siro, with boss Jose Mourinho saying the player could still have a future with them, despite a poor start to his career.
"It is likely that he will return to us," he told A Bola. "He must then show a different mentality to that which we saw during his first few months at Inter."
Chelsea last week