The 22-year-old right-back says Andre Villas-Boas' side are treating the European competition seriously, and the England defender says he would personally love to win the trophy
Spurs go into Thursday's clash against Maribor with three draws from three games in the competition, but a shock 1-0 home defeat to Wigan on Saturday means they are in poor form.
However, the 22-year-old right-back feels it is a privilege to feature in a European competition, and thinks boss Andre Villas-Boas would also like to win the trophy he first claimed with Porto.
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The group is finely balanced with Lazio, Panathinaikos, Spurs and their Thursday night Slovenian opponents all separated by just three points in Group J - but Walker believes all of their opponents are beatable.
He continued: "No disrespect to them, but these are all winnable games.
"With the players we have in our team - we have world-class internationals - we can win this one, go to Lazio and give them a good game, and beat Panathinaikos and the table will look good come the end of it."