We may soon see a bidding war for T-Mobile. French telecom company Iliad has put in a $ 15 billion, all-cash bid for the company that would give it a controlling stake of 56.6 percent. The news throws a huge wrench into the months-long narrative that Sprint is preparing to buy its smaller competitor. T-Mobile parent Deutsche Telekom and Sprint have already reached a tentative agreement that would ultimately combine the third and fourth place US carriers, according to previous reports. But Iliad gives T-Mobile another path in taking the fight to its rivals. The Wall Street Journal first reported Iliad’s interest in T-Mobile on Thursday afternoon.