Complex sentence: The Musée Napoléon reverted to being the Louvre and its looted sculptures such as the Apollo Belvedere were returned to their original collections, with the removal of the "Napoleon" was also mooted and Canova offering to re-purchase it.
Split into simpler sentences: The Musée Napoléon reverted to being the Louvre and its looted sculptures such as the Apollo Belvedere were returned to their original collections. The removal of the "Napoleon" was also mooted, and Canova offered to re-purchase it.