The Black Cats have parted company with Parkinson after a disappointing run of form, meaning the club are now searching for the third manager of the Stewart Donald regime.
So who is available, who could come under consideration and what names would fans like to see given a shot? We round-up the early runners and riders for the Stadium of Light vacancy:
1. Danny Cowley
Cowley, and brother Nicky, left Huddersfield Town earlier this year - having caught the eye of the Championship side after taking Lincoln City from the National League to League One. The duo could prove an attractive option for some. Photo: Naomi Baker
2. Kevin Phillips
Phillps has made no secret of his desire to get into management, and has previously thrown his hat in the ring when vacancies have emerged on Wearside. He’s a name sure to be mentioned again this time, too. Photo: Ross Kinnaird
3. Ryan Lowe
The job Lowe has done at Bury and, more recently, Plymouth Argyle has not gone unnoticed - and he’s now one of the most highly-regarded managers in the EFL. He could be an interesting choice - but would naturally require compensation. Photo: Dan Mullan
4. Paul Cook
Currently without a club after leaving Wigan Athletic, Cook has enjoyed success in League One before and knows what it takes to get out the division. He could help unlock a certain Will Grigg, too… Photo: George Wood