MADRID, May 14 (Reuters) - Ferrovial could join its partner, Australian financial group Macquarie, in the latter's potential sale of stakes in three British airports in Glasgow, Southampton and Aberdeen, the construction company's CFO Ernesto Lopez said on Tuesday.

No final decision has yet been made, Lopez told analysts in a call. (Reporting by Corina Pons; Writing by David Latona; Editing by Inti Landauro)