disclosing your debts is not a requirement to your new company so i dont find a reason for you to tell them its a personal matter.

unsolicited advice, just make sure to settle it if you can because you dont know in the future , maybe there will be good offer for you back in dubai.

we have also loan in uae but we settled it thru a guarantor . we are paying it on a monthly basis without any bad thoughts of it.

paying loans will give you peace of mind.