(Telecompaper) Cinven confirmed it filed the sole bid for the Slovenian's state's controlling stake in Telekom Slovenije. The private equity firm said that if it's bid is selected, it aims to "restore the company's position as a Slovenian champion". This will include significant investment in upgrading Telekom's network and plans to stop the erosion in revenues and return the company to sustainable growth. Investment would centre on expanding the fibre broadband and 4G networks, improving sales channels and customer service and optimising Telekom's product processes. "We believe that Telekom Slovenije represents an attractive, although challenging, investment opportunity, which fits well with Cinven's experience in the telecoms sector," the company said in a statement. Cinven's previous investments include French cable operator Numericable and Dutch operator Ziggo, both of which were eventually listed on the stock market. The company did not disclose the value of its bid for Telekom Slovenije but said it's in discussions with the state holding company on its offer.