Complex sentence: De Paula's time as a player for Real Sociedad was very successful although he was never a regular starter, more often than not scoring goals after coming in as a substitute, and usually made a good goals scored/minutes played ratio.
Split into simpler sentences: De Paula's time as a player for Real Sociedad was very successful although he was never a regular starter. He more often than not scored goals coming in as a substitute, and usually made a good goals scored/minutes played ratio.