Aston Villa must overturn a two-goal deficit against PSG if they are to qualify for the semi-finals of the Champions League tonight.
Unai Emery's team trail 3-1 heading into the second leg of their last eight tie at Villa Park.
The Spaniard believes the home crowd will be a major benefit to his players.
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Kick off is at 8pm.
At the same time, Barcelona take a 4-nil lead into their meeting with Borussia Dortmund in Germany.