For the Kolkatta Test give Dhoni some rest and let his ankle heal properly.He has to face the rigours of Aus shortly and no point in straining now.Let Karthik keep wickets and open.Get Yuvraj in.Play Murali Karthik in place of Harbajan who did not look good despite a couple of wickets. Get Irfan not Ishant in place of Munaf and see how he goes. If we win the second Test give Rohit Sharma in place Of Tendu,Raina in place of Dravid and Yuvi in place of Ganguly a chance in the third Test.Badri can come in place of Laxman.At least one or two can be tried.