Complex sentence: For 2000--01, de Jong joined PSV Eindhoven; after a good run in his debut campaign (28 matches, three goals, national league conquered) and the second, he was loaned to SC Heerenveen for one season.
Split into simpler sentences: For 2000--01, de Jong joined PSV Eindhoven. After a good run in his debut campaign (28 matches, three goals, national league conquered) and the second, he was loaned to SC Heerenveen for one season.