Yahoo Inc could be weeks away from selling 15 to 25 percent of Alibaba Group’s stock back to China‘s largest e-commerce company, in a deal designed to eliminate complexities that had scuttled the parties’ previous negotiations, a person familiar with the matter said.

The two companies have been in talks for a month, the person said, but cautioned that there is no guarantee a deal will be reached.

Numerous discussions have been held in recent years about a deal for Alibaba to reclaim some or all of the 40 percent stake in the company that Yahoo acquired in 2005.

A $17 billion tax-free asset swap between the two companies fell apart in February.

The latest deal would not be tax-free and would be much more straightforward, the person told Reuters on Friday.

“The overall complexity of this deal is much simpler. There’s no IRS risk, there’s no complications with…