5.—The Minister may at any time at his discretion, but subject to the consent of the Minister for Finance, either—

( a ) purchase by agreement at such price and on such terms as he shall, with the consent aforesaid, think proper any foreshore, any easement, profit-a-prendre, or other right over any foreshore, or any right of wreck not belonging to Saorstát Eireann; or

( b ) take by agreement a lease for such term, at such rent, and subject to such covenants and conditions as he shall, with the consent aforesaid, think proper of any foreshore, any easement, profit-a-prendre or other right over any foreshore, or any right of wreck not belonging to Saorstát Eireann.