Catania are bottom of the table and visit unbeaten Roma, but Gigi De Canio believes in a Christmas miracle.
The Stadio Olimpico hosts this fixture at 14.00 GMT, click here for a match preview.
“Facing a great team motivates you to do better and this side can contrast Roma. Snatching a positive result here would be important,” said Coach De Canio.
“I remain extremely confident for our future. Roma have the best defensive record and are the only unbeaten team, so we must be careful.”
Maxi Lopez has a muscular problem and also told a radio station he had already played his final match in a Catania jersey.
Nicolas Spolli is suspended with Giuseppe Bellusci and Sergio Almiron sidelined.
“Sebastian Leto has great mental strength and important potential. He’s not at 100 per cent yet, but he works hard for the team.”