We go into the second leg of our Worthington Cup semi-final trailing 2-1 from the first leg at Stamford Bridge.
A 1-0 win would therefore be enough to take us to the final and just one stop away from European football next season.
Glenn inisted: "We lose Deano, cup tied, that's a major blow. If we lose Les as well we'll have an uphill battle on our hands - but that is where the supporters can come into their own.
"Perhaps they could get us there on a wave of atmosphere and finally end this 11-year spell against Chelsea."
Meanwhile, Glenn aired his views on the crowd trouble that has reared its ugly head in recent weeks.
"It's something that football, not just our club, could do without," he declared.
"It's creeping back. We have to find some way, the laws, the FA, the clubs, players, everyone, we've got to stamp it out and nip it in the bud.
"I think everyone has to be involved in that. Supporters know if someone has thrown something or has caused a problem and they have to be reported.
"If we can all be vigilant we can nullify it pretty quickly.
"But I don't think there will be a problem on Wednesday. If you are a Spurs fan we want the attiude that you are coming here to cheer us all the way to a final.
"It's a lovely game this, a beautiful game when it's played right. We've got families coming back into the stadiums and we don't want to go backwards."
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Glenn Hoddle has urged fans to raise the roof against Chelsea and insisted: "You can be our twelfth man."