Complex sentence: After being released by Porto in June 2007, Sousa played several seasons in the lower leagues of his country--prior to that he played in the second division on loan, with S.C. Covilhã and F.C. Vizela.
Split into simpler sentences: After being released by Porto in June 2007, Sousa played several seasons in the lower leagues of his country. Prior to that he competed in the second division on loan, with S.C. Covilhã and F.C. Vizela.