Remove Assignee when Checkbox is ticked

We currently utilise a ‘People’ column to assign tasks, and a corresponding Update Checklist with each assignee’s name. When an assignee completes their task, they mark their name off the Checklist.

It would be great to have an automation feature where, once an assignee marks their name as completed on the Checklist, they are automatically removed from the People column. This would streamline task management and reduce manual updates.