Reclamation in App Broker only instructs the deployment system to uninstall the unused software when it hits the policy threshold. This does not necessarily result in a newly available entitlement in the pool. For example, if someone has installed Office 365 on a laptop and a desktop, that is only consuming one entitlement due to multiple use rights. If they stop using Office on their desktop and reclamation removes the software from the desktop, the laptop installation is still consuming that entitlement.
In your case, if you're talking about hard allocations (named users / devices), then removing the software via reclamation would not free up / deallocate that entitlement.
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