* IOOF says deal to settle after ANZ splits pension assets in July. : SYDNEY (Reuters) - Australian wealth manager IOOF Holdings Ltd (IFL.AX) said its buyout of pension assets from Australia and New Zealand Banking Group Ltd (ANZ.AX) has been delayed by at least three months, as fallout from a damaging finance sector inquiry hits dealmaking. In a stock exchange filing on Tuesday, IOOF said its $705 million deal to buy part of ANZ’s pension unit would now take place after Australia’s third-largest bank had formally split its pension assets, which IOOF expects to be by July 1.