Gaya has said that Neville has already outlined his philosophy to the players and is hopeful that they can succeed under the former Manchester United man.
He is quoted as saying by Sky Sports News: "We are full of excitement and desire to get things going with him. The past is past and a new era is beginning.
"He wants the team to be compact, hard-working and supportive of each other and Valencia to be a tough opponent.
"We have to be able to have a chance of keeping the ball as otherwise it would be impossible. Let's see what idea the boss has and we will follow it to the death."
Valencia can reach the knockout phase of the Champions League by beating Lyon, but also have to hope that Gent fail to defeat Zenit St Petersburg in their Group H match.