Can i remove member with subscription and replace with new member?

[Kunooz Engineering Consultant LLC]

Hi,

One of our members resigned and her account was under 1-year subscription. Can I delete her account and replace it with a new member?

[Ben Kimmel]

From https://support.atlassian.com/trello/docs/how-billing-works-with-trello-premium-and-standard/ :

How adding and removing Workspace members affects billing

After your initial upgrade, you'll pay a pro-rated price when you add someone to your Standard or Premium Workspace or when someone becomes a multi-board guest. When you pay for that license, you pay for it until the end of your current billing period. 

Removing or deactivating a member from the paid Workspace frees up their license which can then be assigned to a different user at no additional charge. This lets you transfer licenses to new members as many times as you like until your subscription renews.