Complex sentence: Vieira was born in Guinea-Bissau but raised in Portugal, where he signed for the academy at S.L. Benfica, the club he supported, however, he left Portugal in 2011 with his family in search of more job opportunities for his father in England.
Split into simpler sentences: Vieira was born in Guinea-Bissau but raised in Portugal, where he signed for the academy at S.L. Benfica, the club he supported. However, he left Portugal in 2011 with his family in search of more job opportunities for his father in England.