Bradford boss Phil Parkinson believes the support of the home fans will be crucial in tonight's Capital One Cup clash against Arsenal.
The League Two side dumped out Wigan in the fourth round of the competition, but Arsenal now stand in the way of the Bantams as they target another upset win at Valley Parade.
Parkinson, a former Gunners scout, knows that his players will have to dig deep against the Premier League side and has urged Bradford's supporters to play their part by creating an inspiring atmosphere.
"We have to use the passion of our crowd on the night," he said.
"It'll be a great occasion to have a full house and we have to make sure we have a performance full of commitment and desire.
"We'll make sure that everyone knows their jobs and responsibilities. The personnel might be different to normal but we know what system they'll be playing.
"We've got the utmost respect for them as a club and we know it'll be a difficult game, but it's one we have to enjoy."
Parkinson is full of respect for his opposing manager and believes Arsene Wenger will again get the team back on track after a difficult start to the season.
"I think at this stage last year they were in a similar position," Parkinson added.
"I think in English football the biggest prize is the Premier League title and then after that it's getting in the Champions League and Arsene Wenger has managed that year in, year out.
"Everyone in the game appreciates his achievements because they're up against a lot of clubs who have spent more money than them."