Many senior managers at Citigroup’s consumer operations have been heading for the exits, reports the Financial Times. The most recent casualties are Faith Massingale, head of Citi’s international cards business, and Ashok Vaswani, former head of Asia Pacific.

The really troubling thing, says one unnamed executive, is that the loss of people further down the food chain, the senior executives in training, who are also leaving the bank. And even if you can hunt the heads for top talent, it’s hard to instantly replace the bench.

Looks like another sign that it’s hard to cut expenses at a big operation and keep it moving forward. At least, CEO Charles Prince and his team still seem to be struggling with that trade-off.