My understanding of "andienen" is also "anbieten"; could this be something like a contract establishing a Vorkaufsrecht?
Just a wild guess; too many X's and Y's and not enough context (I tried to draw a diagram of who may do what...to no avail...)

this reads to me like a put agreement where RL, under certain conditions, can put to "XXXX".

However, the exact term as state gets not a single hit on Google, which is a bit puzzling.

HOwever, Andienung itself can mean exactly that;

see below;

DMEuro.com - [ Translate this page ]
... 1 Euro = 0,9793 $, Optionsscheine. Andienung. Die Andienung ist die Art und Weise,
wie der Stillhalter im Falle einer Ausübung seiner Verpflichtung nachkommt. ...
www.dmeuro.com/dmwwwangebot/fn/dmo/SH/0/sfn/builddm/ id/6902!60130/cn/cn_detail/cn_map/0/brt/1/ -

In other words RL can "deliver"( put)something to "XXXX" at a fixed price;and this leads me to "conditional sales agreement". See below:


PDF]ST 97-0008-GIL 01/06/1997 Leasing
File Format: PDF/Adobe Acrobat
... As a result, lessees under true leases will not incur tax on lease buy-out charges.
The alternative to a true lease is a conditional sales agreement. ...
www.revenue.state.il.us/legalinformation/ letter/rulings/st/1997/sg970008.PDF



61k

Please take this as nothing more than an educated guess. I vaguely remember that Andienungsvereinbarungen/-verträge involve the sale and purchase of leased goods at their residual value. In any case, the "Andiener" is basically entitled to a "Vorverkaufsrecht" (in analogy to the standard Vorkaufsrecht on the part of the buyer) and the buyer is under an obligation to accept this offer, should the Andiener decide to exercise their Vorverkaufsrecht. Therefore, Andienungsvereinbarung seems to be the same as a Vorverkaufsvertrag, which is translated as preemption contract by Romain.

Please note, however, that preemption agreements in most cases involve an option on the part of the buyer, whereas the Andienungsvereinbarung involves an obligation of the buyer (the seller has the option).

"right of first refusal syn preemption agreement The right to purchase an interest in real property if its owner decides to sell. Unlike an option, the holder of a right of first refusal does not have the unqualified choice to buy or not to buy. A right of first refusal gives the holder the right to match any offer received by the seller from some other prospective buyer. The price and terms offered by the holder of the right of first refusal must equal or better the price and terms contained in a bona fide third party offer. A right of first refusal, often found in leases or limited partnership agreements, serves to preempt a possible sale to a third party, and hence may be called a preemption agreement."

Given that preemption agreement may not fit a 100%, I think "option-to-sell agreement" would convey your arrangement quite well and is, in fact, used in these kind of situations, see e.g.:

"The consumer also entered into an Option to Sell Agreement, whereby the consumer could resell the telephones to QCI at any time upon a specified notice. QCI's obligations were guaranteed by a performance bond with American Diversified Insurance Company, and at the end of the lease, QCI was ***obligated to repurchase*** the phone from the customer."