Monachello was called up for the squad in Allievi Nazionali U-17 team and also participated in The 2011 Granatkin Memorial in Moscow which took place from 3 to 9 January 2011[1] In March 2012, he signed a contract with SC Tavriya, which was confirmed in June 2012.

[2] But two weeks later, in July 2012 it was announced that his club would be FC Metalurh Donetsk of the Ukrainian Premier League.

[3] In January 2013, Monachello left Metalurh Donetsk for Olympiakos Nicosia on a free transfer signing for six months.

[5] He made his debut on 10 August 2013, coming on as a substitute in the 57th minutes, as Cercle Brugge and Lierse drew 1–1.

After five months at the club, his loan spell with Cercle Brugge ended.After the end of the loan Gaetano had to choose his next station for his career.Despite interest from Bolton , Bournemouth and Blackpool he chose his next team to be the Cretan side Ergotelis F.C as he played for the 2013-14 season scoring two goals.