LONDON, Sept 18 (Reuters) - Portuguese toll-road operator Brisa Auto Estradas de Portugal is marketing a 10-year benchmark euro bond with price talk of 50-55 basis points above mid-swaps, a source close to the deal said on Thursday.
"The size of the deal has not been decided," the source said.
Lead managers are Citigroup and Deutsche Bank. Brisa is rated A3 by Moody's Investors Service and A plus by Standard & Poor's Rating Services.