Yes you have the following options when you sell a resort.
1. Transfer the RCI account and spacebanked weeks.
2. Transfer the spacebanked weeks to a different RCI Account.
3. Keep the spacebanked weeks.
I'd recommend you do not make these a term of the sales contract, as that may cause your closing agent to hold funds until the deposits have been transferred (which means you may have to also wait for the buyer's enrollment process to complete).. You may simply want to offer these as a gift upon closing.