How to confirm that the settlement amount is paid to the bank by a lawyer?

I have lost my job in the UAE. I am an Omani national and I am in Oman now. I have a bank loan and I asked a lawyer to reach a settlement with the bank.

The total loan outstanding is 600000dhs. He told me that they agreed to a 200k settlement along with the legal fees.

Now, I will give him that money. He will pay the bank lawyers directly and close the case. How can I be sure that they are not going to run away with this money?