NEW YORK (Reuters) - Standard & Poor's on Monday said it may raise its rating for ABN AMRO Holding NV AAH.AS, citing the proposed takeover of the bank by Barclays (BARC.L: Quote, Profile, Research).

The credit-rating agency also said it may boost its rating for ABN's LaSalle Bank Corp. unit following its proposed sale to Bank of America Corp. (BAC.N: Quote, Profile, Research).

S&P currently awards an "AA-minus" long-term counterparty rating to ABN Amro, which is the fourth-highest investment grade. LaSalle Bank Corp. carries a "A-plus" counterparty credit rating, the fifth-highest investment grade.