Advertise it on pakwheels and hopefully you'll find someone who will take care of RV...
But have alternate ready in case you needed to sale your car urgently Carfirst.com can be solution they will take care of your remaining payments with bank and pay you rest of the agreed amount....
Its hard to sell leased car i had same dilemma last year Ramadan i had my car leased from JS bank and was trying to sale it for 2 months many people come and go they like the car and condition as it was only 6000kMS driven like new car but all of them are skeptical of the leased transaction they agree to pay my demanded price but on a condition that i shall first payout the loan get the documents....
So in the end i end up selling my car to Carfirst though did get 50k less than what i was being offered by some prospect buyers but Carfirst managed everything by themselves and paid the loan to bank and remaining balance to me so i had a good experience with them though it did come at a cost...