Spanish stocks - Factors to watch on Wednesday

MADRID, Aug 27 (Reuters) - The following Spanish stocks may be affected by newspaper reports and other factors on Wednesday. Reuters has not verified the newspaper reports, and cannot vouch for their accuracy:

COLONIAL (COL.MC)

Colonial shareholders could propose debt-for-equity swap to creditors, La Gaceta de los Negocios reported, citing unnamed sources close to the operation.

IBERDROLA (IBE.MC)

New York regulators to rule on Iberdrola's proposed acquisition of Energy East. New York Senator Hillary Clinton backs the utility's acquisition plans, Spanish press reported, citing the Senator's spokeperson.

GRIFOLS (GRLS.MC)