March 19 (Reuters) - Australia's Westpac Banking Corp WBC.AX said on Tuesday it was exiting the provision of personal financial advice through a sale agreement with Viridian Advisory, in a bid to cut costs and simplify its structure. The exit will include the realignment of Westpac's BT Financial Group businesses into its consumer and business divisions, the lender said in a statement. It did not provide a deal value for the agreement. The changes are expected to be earnings per share-positive in 2020, Westpac added.