Career
Born in Peralta – Azkoien, Navarre, Gil joined Athletic Bilbao"s youth setup in 2008, aged 13. He made his debuts as a senior with the farm team in the 2012-2013 campaign, in Tercera División. On 21 June 2013 Gil was promoted to the reserves in Segunda División B. He appeared in 22 matches and scored one goal in the 2014-2015 season, as the B-side returned to Segunda División after a 19-year absence.
Gil made his professional debut on 24 August 2015, starting in a 0–1 home loss against Girona Football Club.