“We are going through a really tough spell,” Mancini said after the game.
“We came here after the defeat in Manchester, which really took the wind out of our sails. Tonight, we didn’t bounce back, we deserved to lose.
“We need to apologise to the fans, stay quiet and do everything we can to turn this form around and finish the season as well as possible.
Roma confirmed on Tuesday morning that Fonseca would leave his post at the end of the current campaign.