The Red Devils are in the quarter-finals of the FA Cup and face West Ham at Old Trafford tomorrow looking to secure a trip to Wembley.
United have fallen below expectations so far this season - they sit sixth in the Premier League, were knocked out of the Champions League at the group stage and face an uphill battle to remain in the Europa League.
The FA Cup now represents their best chance of a trophy and De Gea thinks winning it for the first time since 2004 can rescue their campaign.
“To play [at Wembley] is a really good experience, as it is a stadium with a lot of history of big games and trophies - hopefully we will be there,” the Spaniard told MUTV.
While Liverpool will take a 2-0 lead into the second leg at Old Trafford on Thursday, De Gea pulled off a string of fine saves to ensure the margin was not larger.
