Luis Suarez scored four and Lionel Messi added a hat-trick as Barca rendered next week’s second-leg meaningless with what Valencia sporting director Jesus Garcia Pitarch described as one of the worst results in the club’s history.
Neville Former Manchester United and England international has yet to win in eight La Liga games since taking his first managerial role in December and with Valencia set to visit fellow strugglers Real Betis on Sunday.
Neville refuted suggestions he may be considering resigning and refused to answer more questions when pressed on his future.
“Positivity has been immovable in my life. When I have moments like this I don’t enjoy them at all, it was painful. I stood out there both halves feeling helpless, trying to change it in some way, knowing the tide of the game was against us.
“We were playing against a fantastic team, keep that in perspective, but the scoreline is unacceptable.
“I need to make sure everything in the players’ minds now shifts to Betis. Be clear, we have to deliver on Sunday.