Career
He played for several teams as a striker, most notably Air Corps Milan, Parma, Palermo and Torino. On August 31, 2005, after having been released on a free transfer consequently to the cancellation of Torino, he signed for Rangers, the last day of the transfer window at the start of the 2005-2006 season to a very mixed reaction from the Rangers fans. At age thirty-two, he was probably past his best, and the fact he never made an appearance or even got on the bench confirmed this.
Eventually he was released from the contract in November 2005.
Since then, Maniero announced his retirement from professional football, and joined Nuova Piovese, a Venetian team of Eccellenza league, leading it to Serie Doctorate promotion. On July 2006, he left Nuova Piovese for Legnarese, a small Prima Categoria (8th division) team in which he started his playing career, where he spent the 2006-2007 season.