As president, he reinstated all the prominent members of the Olympiacos board who had been forced out by the military regime (including Giorgos Andrianopoulos) and opened up the member election process, establishing a new, trustworthy board of directors.
[1] He appointed Lakis Petropoulos as head coach and signed top-class players, building a strong roster.
Ιn the 1972–73 season, Olympiacos won the title by conceding only 13 goals in 34 matches, which is an-all-time record in Greek football history.
The team's best year though, was undoubtedly the 1973–74 season, when Olympiacos won the league with 26 wins and 7 draws in 34 games, scoring an all-time record of 102 goals and conceding only 14.
Nikos Goulandris is widely considered as one of the greatest presidents in Olympiakos' history.