Complex sentence: He retired as a player in the summer of 1921 and was then appointed as a coach at Home Park, a role which he would carry out, with the same class that he did as a player, for a number of years.
Split into simpler sentences: He retired as a player in the summer of 1921 and was then appointed as a coach at Home Park. A role which he would carry out, with the same class that he did as a player, for a number of years.