Pastorello's comments were in relation to Lukaku having failed to make the desired impact at Stamford Bridge, suggesting that a transfer elsewhere was a possibility.
However, Lukaku, who has scored three goals in his last two Premier League appearances, has voiced his displeasure at the interview on social media.
In an official statement, Lukaku said: "Never ever will I let someone else speak for me. I kept my mouth shut and focused on helping the team and end the season in the best way possible.
"So if someone out there trying to say something about me and my club. Not in my name."