I used some exercises in a training session I gave earlier today in the morning

selected games(exercises 2-4)

Exercise 4A

(Note that Exercise 4 is after 12..Bb7 earlier in the game). The position later in the game is also of some interest

Grivas-Klimis

Bogo-Indian

Athens 2017

After 17..Ne4(Diagram)

Black seems to be solid and has just activated his Ne4 to control the centre

What do you recommend for White?

After 17..Ne4