“However, I know right now is the time to step down and allow the next group of leaders to take the reins and I am excited to help them along the way.
“To hold up the premiership cup twice alongside Chelsea, Bec Goddard and Matthew Clarke is something I will be forever grateful for.”
Randall paid tribute to Phillips in a comment on her post.
“A powerful legacy left for others to follow. Thank you for the lessons learned and the memories shared,” Randall said.
Crows head of women’s football Phil Harper said the club needed to promote new leaders and Phillips would be there to support and develop them.
“Erin’s decision has been made in conjunction with the club and while we have been discussing it for the last 18 months, we believe this is the right time to make a change,” Harper said.
“She has been a fantastic captain over the last four years but this is a great chance to take the next step as a group.
“Erin will play a big role in mentoring the younger leaders and making sure the leadership and positive culture will be continued at the club.”