Complex sentence: In November 1996, Dia famously convinced then-manager of Southampton, Graeme Souness, that he was the cousin of Ballon d'Or winner George Weah, this lead to him signing a one-month contract with Southampton just days later.
Split into simpler sentences: In November 1996, Dia famously convinced then-manager of Southampton, Graeme Souness, that he was the cousin of Ballon d'Or winner George Weah. That lead to him signing a one-month contract with Southampton just days later.