There is no issues with that. Usually when you buy you go to the notary with the cash, transfer the real estate and pay the to the person amount. It is not the securest way but it is definitely possible. In addition you can also hire somebody to come with you and handle the process. Better alternative would be bank transfer.
Be sure to hire a local, external estate agents (who doesnt sell you the real estate) which will help you in the whole process. There is a lot of scam going on with foreign buyers.