Complex sentence: In 2012, after legal wrangling over the value of the put option, the shareholders of both firms agreed on a sale price of $1.6 billion (€1.2 billion), making Monoprix a wholly owned subsidiary of Casino Group.
Split into simpler sentences: In 2012, after legal wrangling over the value of the put option, the shareholders of both firms agreed on a sale price of $1.6 billion (€1.2 billion). This allowed the deal to close, making Monoprix a wholly owned subsidiary of Casino Group.