The Argentina forward gifted his side the lead from the spot but Roma were unable to hold the lead.
Speaking to the club’s official media after the 1-1 draw at the Doosan Arena, Perotti wasn’t at all pleased with proceedings.
“We didn’t play well,” Perotti started. “We scored early but we should have managed our lead better. It’s the fourth or fifth time we’ve scored first and they’ve equalized. We have to make progress on that.”
“We didn’t play our best game. They did well to stay focused and defended very well, so we couldn’t find enough space. Either way, we didn’t struggle at all.
“That said, we must win every game and we mustn’t make these mistakes in our forthcoming fixtures.”