In India, not much experinced trainers ..skill shortage for TRE/TRI for almost all type of a/cs..still looking for captains for some type of A/c like ERJ170/90 & ATR 42/72. I have replied to a thread recent in past on the same subject..I think there are about 1200 + EXPAT pilots in India..not all pilots will be replaced by locals overnight..it will take another 2 to 3 years..for trainers, probably will take 3 to 4 years to replace with indian pilots..
B737NG if the offer is good ..grab it..you may spend two years..it will be a nice & diff experience in India..All the best