It's just a rumor so basically that was made up and that's why we don't see any news about it.
Maybe fans or someone who wanted him to leave his former team who created that.
If you just heard or read a rumor, always don't expect it to be real but I do agree that there should be a change for where Clarkson is. Lakers is out of the option as they have no space for him.
Lakers already signed Dennis for much cheaper contract, enough addition for their offense. Maybe Clarkson is out of any trade talks.
Bucks would be like one of the best for him but he sure got a lot of contribution to Jazz and will the management willing to let him go?
And who's going to be traded for him that may attract Jazz to let him go, they are in a rebuilding so future draft maybe is what they are aiming.