Carles Puigdemont, the former president of Catalonia, is set to hold a significant event in southern France this Saturday, which could impact the ongoing political negotiations in Catalonia.

As the ERC and PSC parties finalize an agreement for Salvador Illa's investiture, Puigdemont's anticipated return to Spain raises questions about his potential arrest due to outstanding legal issues.

His supporters hope this event will rally the pro-independence base against the ERC-PSC pact.

Meanwhile, ERC plans to have its members vote on the agreement by August 1, while Puigdemont's actions could disrupt these plans and possibly lead to new elections.

The political landscape remains tense as both sides prepare for the implications of Puigdemont's return and the investiture debate.