Complex sentence: His 12 goals for Cardiff, saw him as the top goalscorer for the season, where he was awarded a contract, keeping him at the club til 2020 and the club's Young Player of the Year award.
Split into simpler sentences: His 12 goals for Cardiff saw him as the top goalscorer for the season, and he was awarded a contract keeping him at the club until 2020. He won the club's Young Player of the Year award.