Notify Technician When Request is Reassigned

I've looked through all the Notification Rules and don't see an option to Notify a Technician when a Request has been reassigned to another technician. Sometimes, requests are accidentally assigned to the wrong technician, or a technician is out of the office and the request must be assigned to a different technician.

For example, Technician JOHN SMITH is on vacation. A request is assigned to JOHN SMITH. Upon realizing JOHN SMITH is not available, the request is re-assigned to JANE DOE. Both JOHN SMITH and JANE DOE receive an email notification that a request has been assigned to them; however, it is no longer in JOHN SMITH's "tank."

This is creating confusion and frustration for our technicians who do not want to have to click on an email link to see if the request is still assigned to them, or are confused when pulling up their requests and don't see the request they were notified of. Our technicians would like to receive notification that the request was taken from them and assigned to someone else.

Is this possible?