MUMBAI, June 19 (Reuters) – Foreign inflows into Indian bonds will hit a decade-high of $2 billion around June 28, when they will be included in a widely-tracked JPMorgan index, although the central bank will lap up most of the dollars to avoid a knee-jerk rise in the rupee, bankers said.

The $2 billion, single-day inflow estimate by four bankers trails only the record-high $2.7 billion poured into Indian bonds on Aug. 20, 2014, as prospects of a credit rating upgrade gained traction.