Bharti Airtel has put the company?s Bangladesh tower assets up for sale as it seeks to raise over $2 billion by selling its infrastructure networks to boost its cash reserves.

The operator has a portfolio of 4,000 towers in Bangladesh and expects at least $200 million from divesting its towers in Airtel Bangladesh. Bharti Airtel took full control of its mobile service operations in Bangladesh last year, buying out a 30 per cent stake held by Warid Telecom, a wholly-owned subsidiary of the Abu Dhabi Group.

Bharti Airtel is working towards building a corpus to fund the forthcoming spectrum auction in India.