Tenants split, one staying. Security deposit?

[Daniel B.]

Hi,

Tenants split up and had initially agreed to have one removed from lease. Person being removed is now requesting to get part of their deposit back when the other person moves out. Lease states that deposit is mailed payable to both tenants mailed to one of them. If one tenants stays and signs a new lease, can i not roll the deposit into the new lease? I don’t want to return the deposit made payable to both of them if one of them will stay In the house deposit free, they may not send in a new deposit?

Advice?