Hi Kaeel.
Are you sure that are many interested in it ?. no offense, have you seen any of his buyers ?.
I myself a property agent in Singapore. Normally, this is what agent do when he/she needs the owner gives him/her the right to sell. I believe in JB, it is very common not to give exclusive right, it is normally open to any prop agent to market your house. you need to decide.
There is always good and bad having an exclusive or not exclusive. Please study your homework well.
just a 2-cent input from me.
good luck.
Based on my SG experience, non-exclusive is better. The agent who gets the best selling price gets the deal!