I'm first MBA student. I'll probably be Summer Associate/Intern in one of second tier consultancies (ATK/RB/Monitor). If everything is OK, I'll receive full-time offer after my internship.
However, after the second year of MBA I'd like to try to get in MBB.
What should I do with offer from tier-2 right after summer internship? Will I have to say 'yes' or 'no' immediately even without trying to get in MBB?
Is it possible to extend offer after internship for the next year?