Luzon, 40, was appointed in January and won 12 of his 36 matches in charge, steering the club to a safe 12th-placed finish last season.
Earlier this week, Luzon told reporters that he did not fear for his future. "I need to worry only about the next game, how I pick the team and how I encourage the squad to bring the result on Saturday".
He said: "We know that we have a crisis with the injuries in the last two months.
"This is the situation. This is our squad. Without a pure wide player in the eleven, it is difficult to create chances and get the result.