Are you suggesting that Modric will start regularly then? It sounds unbelievable that he starts every game considering his age. I can see him mentoring players on the training ground or helping from the bench now and then. I guess you don't think age is a huge issue, judging from your previous comment, although I'm not sure he has the strength to keep running if he hits 50 or 60 years old.
Seems not easy for Luka Modric getting regular position every games during he was over age but Serie A have typical slow games play and not difficult to be play early minutes every domestic league matches. Luka Modric would be mentoring for youth player but I believe his performance last season with Madrid still can fight with several youth player getting regular position.
Looks how consistency performance of Cristiano Ronaldo at Al Nassr indeed he was 40 years old and Luka Modric can perform well for Milan, first pre season match, Milan will face Liverpool and wish Allegri can play Luka Modric as debut match looking for how many minutes keep effective playing as regular place.