My friend be very careful!.I think you must get offer letter first before your current company could issue you NOC; that goes with logic actually.Now, you are not 100% sure that QP will offer you a job post because anything can happen after you get NOC. For example, getting NOC means that your have resign from your current company, so what will you do if you don’t get any good result from QP after your resignation? Please don’t buy fish in water!
All the best