Complex sentence: After playing eight games in the 2011--12 season, Gallegos returned to his country and on 23 August 2012, joined Peñarol on a two-year contract.
Split into simpler sentences: After playing eight games in the 2011--12 season, Gallegos returned to his country. On 23 August 2012, he joined Peñarol on a two-year contract.