William Gallas feels Arsenal have the perfect opportunity to show their quality in their UEFA Champions League second leg against Liverpool.


The first leg of the quarter-final at Emirates Stadium finished 1-1 after Emmanuel Adebayor's goal was cancelled out by Liverpool's Dirk Kuyt.


"We know that it will be difficult, we know that they will be strong and we know the supporters will be behind them, so that will be the opportunity to show everybody how good we can be," Gallas told Sky Sports News.


Cesc Fabregas also acknowledged the difficulty facing Arsenal, but the Spanish midfielder insists the pressure is still on both clubs.