I would pay attention to this contract article as well:
"If the buyer desires to resell the unit , he has to follow the following steps :
• Notify the First Party through registered mail – return receipt requested , of his intent to sell his property, the price requested and mode of payment , Name, nationality and occupation of the new buyer .
• First Party has the First Rights of Refusal to purchase the property .
• If there is no response from the First Party within 30 days after receipt , Second Party can proceed with the sale at the same requested price (or higher) and with the conditions mentioned in his registered mail to the First Party. "