The 35-year-old lines up for Spurs in the first leg of their Europa League last-32 clash at home to Lyon tonight.
Gallas said: “Tottenham want to win the Europa League and it’s very important to have something to show at the end of the season.
“We also want to qualify for the Champions League.
“It’s a big schedule but we’re a big club — and big clubs want to play in the biggest competitions. We’ve got the squad and we can get both.”