Complex sentence: After Harrison's death in 2001, his widow Olivia was approached with several offers by various production companies wanting to produce a film about her late husband's life, but she declined because he wished to tell his own life story through his video archive.
Split into simpler sentences: After Harrison's death in 2001, various production companies approached his widow Olivia about producing a film about her late husband's life. She declined because he wished to tell his own life story through his video archive.