Career
After playing rugby in his late infancy, Barrales Club Atlético Banfield"s youth system at the age of 12, and made his professionals debuts in 2006, going on to establish as a key member for the first team During the 2007-2008 season, both the Apertura and Clausura tournaments combined, he scored eight goals in 32 games as the team ranked third in the former. On 3 July 2009, Spain"s Recreativo de Huelva signed Barrales on loan, with the Andalusians in the second division.
At the end the season he returned to Banfield, where he failed to reproduce his previous form, leaving to Santiago Wanderers of Chile in the same predicament in early January 2011.
The following year, he returned to his homeland and joined Primera B Nacional"s Club Atlético Huracán. On 5 July 2013, Barrales signed with Asteras Tripoli F.C. for an undisclosed fee.
He made his Superleague Greece debut on 18 August, playing the full 90 minutes in a 3–3 home draw against Proceedings of the Aristotelian Society Giannina Football Club. Barrales was linked to Standard Liège in April 2015, after solid performances that eventually led him to be crowned league top scorer in the 2014-2015 campaign with 17 goals, helping his team to the fourth position. In addition, he netted three times in the group stage of the Union of European Football Associations Europa League, twice against Tottenham Hotspur.
On 18 August 2015, Barrales joined Turkish club Sivasspor after agreeing to a three-year contract for €1.5 million.