This isn’t so much a new rumor as it is the strengthening of an existing one.
Shams Charania of The Athletic, today, with sauces saying “teams have expressed interest” in Lauri Markkanen, and “Chicago is listening to potential suitors”
The reason to take this more seriously is in both the wording and the messenger. Brian Windhorst and Zach Lowe of ESPN both brought up the likelihood of a Markannen trade recently, but it was phrased in a way that seemed less active.
Plus, while Shams is an unethical Tweeter, he is well-sourced.