Yahoo President and CEO Marissa Mayer delivers a keynote address at the 2014 International CES in Las Vegas, Jan. 7, 2014.

According to sources close to the situation, Yahoo CEO Marissa Mayer is in the later stages of hiring a chief revenue officer, in an effort aimed at boosting sales at the Silicon Valley Internet giant.

It's a good idea since the company — despite a run-up in its stock due to a 24 percent stake in China's Alibaba — has seen its core business continue to decline under Mayer's leadership over the last two years.