On 4 November 2015, Chávez scored the second goal in the 2015 Copa Argentina Final helping Boca defeat Rosario Central 2–0, and secure their domestic double.
[4] The most expensive of all 2016–17 season signings, the Argentine striker arrived with the most fanfare but ultimately failed enormously to the point where his transfer is the biggest miss.
Bought to replace the ever-reliable Marcus Berg, the former Boca Juniors winger made an instant impact by scoring in his debut.
It was questioned in the beginning whether he even wanted to transfer to Greece, and on 23 September 2017, Chavez suffered a hamstring injury which will keep him on the sidelines for several weeks.
[6][7] With the concern raised in Panathinaikos about the debt to Boca Juniors and the refusal of the player to continue in the Greek Super League the information from Argentina that Estudiantes are interested in the player to cover part of Panathinaikos's debt even with me the form of loan for the rest of the season, will be an important help for the struggling financially Greens.