Immediately after retiring Yosu began coaching at his last team Gimnástica, even though he did not possess the obligatory licence. Afterwards he returned to main club Racing, starting with its youth teams.
From 1977 to 1979 Yosu served as head manager for Santander, but would work with the club in several other capacities, from match delegate to director of football. Additionally, in no fewer than five occasions, as an interim manager in the 90's/2000's, he successfully led the side away from relegation zone, always in the top level.
In March 2007, Yosu was honoured by the Government of Cantabria for his contribution to football in the area. He retired from the football world for good in January 2009, after leaving his post as Racing's director of football.