Andre Villas-Boas' men travel to face the French side in the last 32 of the Europa League holding a 2-1 aggregate lead, but the 35-year-old says scoring is still important
Spurs go into their Europa League last-32 second-leg meeting with the French side holding a 2-1 lead courtesy of a Gareth Bale-inspired victory at White Hart Lane.
And, though keeping a clean sheet would prove sufficient for the north London club to progress, Gallas says scoring will be his side's priority.
"If we put them under pressure straight away they will be wary because if they concede a goal, they will be in trouble," he told reporters.
“We don’t have to try to come back to London with a 0-0 scoreline. We have to play our game, the way we play all the time and then I think then we can qualify,” said Gallas.
"If they score and we then fail to score, we’ll be out."