That's according to Okdiario's chief pundit Eduardo Inda, speaking on El Chiringuito.
Both veterans are favourites of Real coach Zinedine Zidane.
"Karim Benzema will be renewed until 2022, until he is 35 years old," revealed Inda. "Modric will be renewing until the year 2021."
These two deals will follow Toni Kroos' agreement, with the German penning terms to 2023.