We have a workflow such that when an issue is ready for QA, we resolve this issue and leave it on Unassigned. The tester then picks up the issue from unassigned and puts it on his/her name.
This means that the developer always have to edit the assignee. Sometimes to some specific user, but most often to unassigned.
Is there some way to either set the assignee to unassigned in the Resolve Issue Screen, or set the assignee to Unassigned with a post function if it wasn't manually changed by the user.