You can only transfer points in OR out your account once per use year. Add the bit of hassle of managing the transaction and it won't be easy to find someone willing to transfer just one point. You may try to offer a premium for that one single point or maybe transfer just a few more to make it ore likely to happen.
Some of the brokers also manage points transfer, try to enquiry them what would be the minimum, but it would probably be much higher. Your best bet is the rent board here on the DIS