Complex sentence: He was drafted by the Green Bay Packers in the seventh round of the 2008 NFL Draft, acquired by the Seattle Seahawks in 2012 and then traded to the Oakland Raiders in 2013.
Split into simpler sentences: He was drafted by the Green Bay Packers in the seventh round of the 2008 NFL Draft. He signed wtih the Seattle Seahawks in 2012 and then traded to the Raiders in 2013.