Complex sentence: Oattara signed a two-way contract with the Brooklyn Nets of the NBA on July 21,2017, becoming the first foreign born player to sign a two-way deal with an NBA team.
Split into simpler sentences: Oattara signed a two-way contract with the Brooklyn Nets of the NBA on July 21,2017. He also became the first foreign born player to sign a two-way deal with an NBA team.