The Blues arrive in N17 top of the Premier League, unbeaten with six wins in seven matches but Mousa points to playing at home and our fine recent run - four wins on the trot in the Premier League, nine unbeaten in all competitions - as good reason to be positive.
“Of course Chelsea will be a tough team to play against because they have so many quality players all over the pitch,” he said.
“But we are playing at home and that is always good for us. We are on a good run of form, the spirit among the players is very high so I’m confident we can get a good result.”
Mousa and Jan Vertonghen know one of Chelsea’s big threats well - their Belgian team-mate Eden Hazard.
“It’s great to have someone of Hazard’s qualities in the Belgium team,” added Mousa. “He is without question the sort of player that could play in any team in the world so we are fortunate to have him in ours.”