|Full name||Rubén Cousillas Fuse|
|Date of birth||19 May 1957|
|Place of birth||Roque Perez, Argentina|
|Manchester City (assistant manager)|
|1998–2002||San Lorenzo (assistant)|
|2002–2003||River Plate (assistant)|
|2009–2010||Real Madrid (assistant)|
|2013–||Manchester City (co-assistant)|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
Cousillas started his career at San Lorenzo de Almagro with whom he won promotion to Primera División del Fútbol Argentino in the year 1982. In addition, he also played for Millonarios Fútbol Club in Bogota, with which he won three Colombian titles. He also played for Vélez Sársfield, Club Deportivo Mandiyú and Argentinos Juniors as well as Huachipato, where he ended his playing career.
Management and coaching career
In 1998, Cousillas returned to his former playing club San Lorenzo, to become assistant to Oscar Ruggeri. When Ruggeri was replaced by Manuel Pellegrini, Cousillas struck a great working partnership with the Chilean, and followed him to River Plate, Villareal, Real Madrid and Málaga.
Ruben took caretaker charge of Manchester City in their 2-1 UEFA Champions League defeat to FC Barcelona due to manager Manuel Pellegrini having a 3 match UEFA ban for critisizing the referee in the first leg.
Primera División B. 1987 & 1988
- "Manuel Pellegrini confirms backroom staff". MCFC. 14 June 2013. Retrieved 2013-06-14.