That's according to Okdiario's chief pundit Eduardo Inda, while speaking on El Chiringuito.
Modric has lost his first-choice status this season under coach Zinedine Zidane.
And Inda says: "Modric is not happy with his position on the team, he is playing less than he expected.
"There is the Euros and if he does not play he will have a complicated one, he has even thought about going out in the winter to have minutes.
"Zidane has informed him that he will almost certainly not be a starter in the Clasico."