LONDON, Oct 19 (Reuters) - EQT and Tillman Infrastructure are vying to buy Brookfield's 45% stake in French towers firm TDF - a business worth about 7 billion euros excluding debt, three sources familiar with the matter told Reuters.

The two investment firms are carrying out due diligence on the company and are expected to submit rival bids in November to replace Brookfield as TDF's single largest investor, the sources said, speaking on condition of anonymity.

Brookfield, EQT and Orange declined to comment while TDF and Tillman were not immediately available. (Reporting by Pamela Barbaglia and Emma-Victoria Farr;Editing by Elaine Hardcastle)