MOSCOW (Reuters) - Rosneft (>> NK Rosneft' PAO) has sent a draft mandatory offer to the central bank to buy the shares it does not already own in oil firm Bashneft (>> ANK Bashneft' PAO), the Russian energy company said in a regulatory statement released late on Friday.

State-controlled Rosneft is seeking government approval to buy up to 100 percent of Bashneft after acquiring a controlling stake this month for 330 billion roubles.

The company will spend no more than 206 billion roubles ($3.27 billion) on the buyout of 55.5 million ordinary shares in Bashneft, it said in a separate statement.

(Reporting by Polina Devitt and Vladimir Soldatkin; editing by Maria Kiselyova and Jason Neely)

Stocks treated in this article : NK Rosneft' PAO, ANK Bashneft' PAO