PORTLAND OREGON — 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.

"It is absolutely false that I have entertained offers for (the Trail Blazers). Unnamed sources are wrong as usual," Allen tweeted.

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

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