|Date of birth||26 November 1987|
|Place of birth||Naples, Italy|
|Height||1.85 m (6 ft 1 in)|
|2007–2008||→ Ascoli (loan)||20||(1)|
|2008–2009||→ Bari (loan)||0||(0)|
|2009||→ Lumezzane (loan)||13||(2)|
|2009–2010||→ Arezzo (loan)||31||(12)|
|2012–2013||→ Ternana (loan)||18||(2)|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
Juventus and loans
Maniero began his youth career with Juventus F.C.  and was promoted to the Primavera reserve team in 2005. As a player of under-20 team, Maniero also receive some call ups by Didier Deschamps for the senior side in various Coppa Italia and Serie B matches, specifically in matches against U.C. AlbinoLeffe, Lecce, and Genoa which he was an unused bench. This was the season when Juventus were relegated to the second division for the first time in their history following the Calciopoli scandal, and Maniero was eventually part of the team that led Juventus back to Serie A that year.
In June 2007, Maniero was not part of Claudio Ranieri's first team plans and so, he was loaned out to Ascoli Calcio 1898, together with fellow Juventus youth player Andrea Luci. With Ascoli, Maniero managed a single goal in 21 league appearances, and following his loan stint with Ascoli, he was again loaned out to another Serie B club A.S. Bari, along with fellow Juventus loanees Davide Lanzafame, Raffaele Bianco, and Rej Volpato. While Lanzafame and Bianco established themselves well with the club, Maniero failed to settle and gain regular action, as the attacker made nil official appearances in six months with the biancorossi.
Following his disappointing spell with Bari, Maniero was sub-loaned out to Italian third division side, A.C. Lumezzane. During his loan period with Lumezzane, Maniero made his first 13 league appearances, and he also scored 2 goals.
In July 2009, another third division club A.C. Arezzo officially announced the engagement of Maniero. Maniero had a successful season with the Lega Pro Prima Divisione side, establishing himself as a starter and scoring 12 goals in 31 league appearances.
In August 2010 Maniero joined Pescara ahead of the 2010-11 Serie B campaign in co-ownership deal, for €450,000. Co-currently Juventus signed Luca Del Papa from Pescara also in co-ownership deal for €300,000. On the same day Pescara signed Raffaele Alcibiade in temporary deal from Juve. Maniero, however, failed to score regularly in Serie B. On 31 August 2012 he left for Serie B newcomer Ternana after Maniero was excluded from Pescara's Serie A plan. Ternana also got midfielder Antonino Ragusa and defender Riccardo Brosco from Pescara on the same day.
On 19 June 2013 the co-ownership between Pescara and Juventus were terminated, which saw Maniero now 100% under Pescara's contract as well as Del Papa under Juve.
- Fullsoccer (Italian)
- "Luci e Maniero bianconeri" (in Italian). Ascoli Calcio 1898. 26 June 2007. Retrieved 20 June 2013.
- "Preso il terzino sinistro Bonomi" (in Italian). AS Bari. 28 June 2008. Retrieved 20 June 2013.
- "Maric e Maniero in uscita" (in Italian). AS Bari. 18 January 2009. Retrieved 20 June 2013.
- "Arezzo: i primi sette colpi" (in Italian). tuttomercatoweb.com. 10 July 2009. Retrieved 10 July 2009.
- Delfino Pescara 1936 Srl Report and Accounts on 30 June 2012 (Italian), Require purchase in CCIAA
- "Speciale calciomercato: chiusura" (in Italian). Delfino Pescara 1936. 31 August 2012. Retrieved 27 January 2013.
- "Co-ownership agreement summary". Juventus FC. 19 June 2013. Retrieved 20 June 2013.
- National Team Archive of FIGC (Italian)
- Lega Serie B profile (Italian)
- Football.it profile (Italian)