Aviva Investors' Aaron Grehan is to take over the management of Jerry Brewin's emerging market debt funds, the firm has confirmed.

Grehan joined Aviva Investors in 2000 and has been a portfolio manager since 2004.

Brewin is head of the emerging market debts fund and is set to leave the firm in August when he joins ING Investment Management as head of emerging debt.

“Our team-based approach means Aaron Grehan will seamlessly take over the management of our external debt capabilities following Jerry’s departure. This includes the Aviva Investors emerging markets debt fund, which Aaron and Jerry have been managing hand-in-hand for more than three years," said a spokesperson for Aviva Investors.