PORTLAND, Ore. -- Billionaire Paul Allen is emphatically refuting reports that he is entertaining offers for the Portland Trail Blazers.

Allen went to Twitter on Thursday to rebut the report, which appeared in a blog post on Comcast SportsNet Northwest's website. CSNNW broadcasts Trail Blazers games.

David Postman, a spokesman for Allen, also disputed the blog post.

There have been rumors swirling in recent months that the Microsoft co-founder is positioning the team for sale. Talk of a sale has escalated recently with the firing of coach Nate McMillan. The Blazers are also operating under an interim general manager.

In an interview with several media outlets in December at the start of the lockout-shortened season, Allen also denied he intended to sell the team.