I seriously doubt they trade him. But Schefter is reporting that teams are expected to call the Steelers about Tomlin and his potential availability as well.
I think this speaks to how the current crops of prospective head coaches are seen in league circles. Aside from the Crown Jewel of the OC from Detroit, the lost isn't great....which is why I can see Joe Brady getting a lot of interest. But there's a whole different thread for that.
And with Ben Johnson, only one team can get him...and he's spent the last two years pulling his name out of jobs. Some question as to if he even takes a HC gig this year.