Nope, this is against the rules.
Inform your buyer eBay rules state, the item has to be purchased first , and paid for through eBay checkout, no cash on collection now, and only then can contact details and times for collection ( viewing) be exchanged and arranged.
If on viewing the buyer does not wish to buy, you then cancel the order citing Buyer Requests to Cancel, they are fully refunded, and your seller performance is not affected.
One tip, when they do come to collect, remind them they Must bring with them the 6 digit collection code. Explain without this code you cannot release the item. It is your only proof of collection, to be scanned or the numbers manually entered.
@sukvinderh