Same thing happened where I work for one bike, legal advised it had to be left where it was or at least kept somewhere for the owner. Even the bike locks they cut off the old racks (when they got changed) along with that bike are still there on the floor.
Not saying that is the law but our place got cold feet of (I think the plan was) to donate it to a local charity that does up and sells bikes cheap.
In your case, if management are offering, I'd take it as any dispute I think would be between the owner and them not you?