We've been to Madrid, Juventus, Barcelona the last 12 months and remained undefeated. Spurs can definitely go to Dortmund and get a draw at the very least. Plus the home leg will be one of the first games in our new stadium. The white wall versus the yellow wall
No doubt Dortmund are on fire this season, but hard to say how strong you are compared to Spurs. The likes of Sancho, Reus, Alcacer, Pulisic do not compare favorably to Kane, Eriksen, Son, Alli. I think only Reus gets in for Alli there. Saying that, Alli is coming back into his best form recently.
Much depends on injuries and who has their best players fit in Feb/March, it will be a very even game for sure.