PayPal is reportedly in talks with fintech giant Stripe and private-equity firm Advent International over a potential sale, in a development that could dramatically reshape the global digital payments industry. The discussions follow an offer made in July by Stripe and Advent to acquire the struggling payments company. The proposed deal would bring together two of the biggest names in digital payments while giving private-equity investor Advent a major role in one of the industry’s most recognizable businesses. Although negotiations are continuing, no final agreement has been reached, and the discussions could still end without a transaction. Its declining market value, increasing competition and concerns about future growth have made the company a potential target for strategic and financial buyers.