ISL Delhi Dynamos finalises assistant coaching staff The club has signed Gonzalo Yarza and Martin Ruiz as assistant coach and goalkeeping coach respectively for the upcoming season of the ISL. The two will work alongside head coach Miguel Angel Portugal. Team Sportstar 16 September, 2017 16:35 IST Gonzalo Yarza and Martin Ruiz will assist head coach Miguel Angel Portugal for Delhi Dynamos. - Ritu Raj Konwar Team Sportstar 16 September, 2017 16:35 IST Delhi Dynamos FC has signed Spaniards Gonzalo Yarza and Martin Ruiz as assistant coach and goalkeeping coach respectively for the coming season of the ISL. The two will work alongside head coach Miguel Angel Portugal. The 58-year old Yarza played for Athletic Bilbao for five years before being its head of Physical Training and Methodology for a decade. The 44-year old Ruiz has worked with Shanghai Shenxin and Henan Jianye and was also part of the Mumbai City FC in 2015. Subscribe to our daily newsletter Get your daily dose of Sportstar with handpicked stories delivered right to your inbox! SUBSCRIBE Please enter a valid email address.