Dortmund lead 3-0 from the first-leg in Germany.
Spurs were torn apart in Germany last week, losing 3-0 at Signal Iduna Park.
Of course Spurs are expected to put up more of a fight at White Hart Lane - Bur Dortmund would be forgiven for taking the tie easily.
Dortmund are in a commanding position and could rest players or take their foot off the gas for the London leg of this tie.
But two men from the club have now insisted that will not be the case.
"We are not yet through Tottenham will appear differently in the second leg."
Another Dortmund figure to comment was their excellent full-back Marcel Schmelzer.
The German international stated:
"The return match is a completely different game, we need to be wide awake."
Tottenham are clearly concentrating on fighting for the Premier League title - as they sit just behind top side Leicester City in the race for the league.
So it may be that Spurs again rest some of their key players for a tie that appears to be gone.
Dortmund might also rest players. Marco Reus, Pierre-Emerick Aubameyang and Henrikh Mkhitaryan may get the game off, whilst Mats Hummels may also be awarded a rest.
Tottenham will hope so, as they will need all the help they can get to overturn their first-leg deficit.