Roma midfielder Radja Nainggolan says they must be wary facing Champions League opponents Chelsea at the Olimpico.

Roma came close to snatching a stunning Champions League victory over Chelsea at Stamford Bridge two weeks ago, with the score finishing at 3-3.

"I don't know if it will be more or less difficult," Nainggolan told a press conference on Monday. "They'll have more players available, they've been winning.

"We respect all teams especially Chelsea but we are aware of our means and work. We played a great game in London - we were close to winning it.

"We must be cautious. We are playing at home, in front of our full capacity crowd. We have what it takes to win the game.

"If we win tomorrow, it would be a step forward to the knockout round. We take it game by game, our results are good. We must try and score more goals.

"If you keep having narrow margin wins, you might concede a goal. We can still improve going forward but we are enjoying the moment."