With a change in the market you may hear some terms you haven't heard before. There was no reason to use them in a Sellers' Market. Today, there's a better chance that Buyers can find what they want to buy but....they don't know if they can sell their home.
What to do??? "Subject to sale of Buyer's home" is a term that we're starting to see. There are a couple of clauses that would be used in the contract to protect both Buyer & Seller. It's not open ended & it's specific. Clauses would include information like the address of the home, list price, length of time allowed for a sale, a shotgun clause for the Seller should another offer come in, etc. Your experienced realtor can explain in more detail. I expect to see this used more often as both Buyers & Sellers try to navigate a changing market.