Iliad’s $15 billion bid for T-Mobile is still on the table but the French carrier could be seeking an American company to partner on a bid for a larger stake, according to the Wall Street Journal.

The existing bid for 56 percent values T-Mobile at around $33 per share. Deutsche Telekom (DT), the majority shareholder of T-Mobile, called the bid inadequate.

Iliad Chief Financial Officer Thomas Reynaud said the deal could still “evolve” and that his company is currently talking with potential partners, some American, about possibly bidding for an increased stake. Reynaud told reporters that the possible partners were either industrial competitors or private equity firms. 

Meanwhile, Bloomberg reported that DT officials have discussed $35 per share as the minimum valuation for a suitable offer.

Iliad’s current offer escalated in relevance after SoftBank and Sprint dropped their long-gestating attempt at buying T-Mobile from DT. Sprint appointed Marcelo Claure as its new CEO and has since focused on rolling out new competitive pricing plans.