Telecoms company GO has invited banks to pitch for the role of advising it on the full sale of the company, sources with knowledge of the matter told Reuters.

The invitation was sent out to international investment banks and specialist advisory firms around the beginning of September, the sources said speaking on condition of anonymity as the information isn't public.

GO declined to comment.

However, in a company announcement dated Sept. 16 which invited investors to a meeting on October 29, GO said it wanted approval from shareholders to seek bids for the company's entire issued share capital.

Emirates International Telecommunications (EIT) announced in July it planned to sell its 60 percent stake in GO. Shares in GO closed Monday at €3.45 each, close to the near-six-year high achieved in July of €3.6 per share, according to stock exchange data.

Monday's closing price valued the operator at around €2.07 billion, according to Reuters calculations, with bourse data giving the firm a price-to-earnings ratio of 24 times at the end of September.

GO reported revenue of €60.7 million in the first half of 2015, flat to the same period a year earlier.