Moody's decision to place the Glasgow bank on review for downgrade follows the announcement this month of a strategic review after Clydesdale's chief executive David Thorburn said returns were "unacceptable".
Moody's senior analyst Ross Abercromby said: "Although Moody's does not expect the outcome of the strategic review to dramatically change Clydesdale's credit profile, the rating review will focus on the extent to which the strategic review leads to any change in the future shape of Clydesdale and any impact this will have on profitability and funding."
