Complex sentence: In 2016, Mos Def announced his retirement from both the music and the film industry on Kanye West's website, he has stated once he'll retire in 2016 after releasing his final album.
Split into simpler sentences: In 2016, Mos Def announced his retirement from both the music and film industries on Kanye West's website. He has stated once he'll retire in 2016 after releasing his final album.