The former Red Devils full-back admits he was unable to steady the ship at Spanish club because he was indecisive and unprepared
Gary Neville believes he failed as Valencia manager because he was "weak" and "unqualified" for the job.
The former Manchester United and England full-back took charge of the Spanish side in December 2015, joining his brother Phil, who was already there as the assistant coach.
Los Che were ninth in La Liga when Neville took over, but had dropped to 13th by the time he was fired at the end of March having won 11 and drawn seven of his 28 matches.