circle back

Etymology
Alluding to physically making a circle to order to return to one's starting point (as in sense 3).

Verb

 * 1)  To return to a previous location or state; to come back to.
 * 2)  To return to a previous topic of discussion; to bring up again.
 * 1)  To return to a previous topic of discussion; to bring up again.
 * 1)  To return to a previous topic of discussion; to bring up again.
 * 1)  To return to a previous topic of discussion; to bring up again.
 * 1)  To return to a previous topic of discussion; to bring up again.

Usage notes

 * Often considered to be clichéd or even passive-aggressive.