AT&T is hunting for buyers of its massive network of 10,000 cell towers worth about $5 billion to defray the costs of Wall Street-pleasing stock buybacks and fund potential acquisition deals in Europe.

The company first signaled a willingness to sell its towers and other ancillary assets at an investor meeting in March according to Bloomberg News. AT&T has hired TAP Advisors LLC and JPMorgan Chase to help coordinate the sale.

After the sale, AT&T would lease access to the network of cell towers from its new owner, potentially winning AT&T certain tax benefits. In return, the company will give up about $326 million in annual revenue now earned from other companies that pay to lease space on AT&T’s towers.

The sale could help competing carriers seeking to improve coverage. An independent owner will any wireless company to lease access to a site’s tower, something AT&T did not always permit for competitive reasons. That could cut a lot of red tape for companies seeking to build new tower sites and meeting objections from area residents.

Tower company consolidation has already reduced the number of potential buyers to three major likely contenders: Crown Castle International, SBA Communications, and the largest tower owner in the United States – American Tower Corp.

Cell tower sales are no longer unusual. T-Mobile USA agreed to sell the rights to operate 7,200 cellular towers to Crown Castle for $2.4 billion last September and other companies are buying wireless network assets in Brazil and Mexico.