Blanco Leschuk made his professional debut for
Arsenal de Sarandí on 8 March 2011 in a 3–0 draw against
Independiente. He scored his first goal in a 1–1 draw against
Colón on 11 June 2011. On 27 February 2014,
Anzhi Makhachkala announced they had signed Blanco Leschuk on a free transfer. He didn't make a single appearance at the club and left Anzhi at the end of the season. In September 2014, Blanco Leschuk signed for Moroccan side
Wydad Casablanca on a two-year contract, He terminated his contract with the club by mutual consent in February 2015. Blanco Leschuk joined
Assyriska in March 2015. In 2016, he moved to Ukrainian side
Karpaty Lviv. Blanco Leschuk agreed to a contract with
Shakhtar Donetsk in 2017, but featured sparingly before joining Spanish club
Málaga on loan on 8 August 2018. Upon returning, he switched teams and countries again after signing for Turkish side
Antalyaspor. On 17 September 2020, Blanco Leschuk returned to Spain after joining
Real Oviedo on a one-year loan deal. The following 23 July, he moved to
Eibar also in the second division, again on loan. On 16 August 2022, Blanco Leschuk signed a permanent two-year deal with the
Armeros. On 30 August 2023, he terminated his contract with the club. ==International career==