KKR, which is in talks for $3 billion in New York City pension fund money, has agreed not to take any piece of the investment’s gain until it surpasses a minimum threshold, the New York Post is reporting. It was not clear what the threshold was but New York City Comptroller Scott Stringer’s office targets a 7 percent annual return, the NY Post said. The deal would mark the first time KKR received NYC pension cash.