Unai Emery believes Villarreal can benefit from the abolition of the away goals rule as they attempt a comeback against Liverpool "no-one has achieved".
The Spanish side entertain the Reds in their Champions League semi-final second leg on Tuesday hoping to overturn a 2-0 deficit from the first game at Anfield last week.
With the away goals rule having been ended this season by UEFA, Villarreal need only to win by a two-goal margin to take the game to extra time and possibly penalties. Previously, had Liverpool scored, the Spaniards would have required to win by at least three goals to reach their first Champions League final.
