The company is still searching for an investor, and the delay could see the unit’s German parent company revaluate plans to sell-off the business.
Iliad has reportedly held discussions with potential partners, including private equity firm KRR, but the company has not yet submitted a higher bid to acquire the US unit.
Deutsche Telekom rejected its first bid of $15 billion, and Iliad is reportedly looking to raise its bid by $5 billion.
Board members at Deutsche Telekom are now split over whether they should sell the business, given the fact that it is one of their only growing assets worldwide.
Deutsche Telekom has not yet heard of an improved offer from Iliad, but considers its interest to be serious.