What is the expected ROI from IIM-Lucknow, other than networking and brand?

Don’t let people mislead you into believing that ROU is just a materialistic element and does not have much value. Once you are out of B-school you just want to have a financially stable life. The fees you have invested are much more than just fees. It is the skills, time, and foregone salaries of 2 years. 

The jobs you land out of a B School are based on your past performance, especially during summer placements. In fact, many high-paying jobs in the B-school placement reports are Summer Internship PPOs.

IIM Lucknow is an outstanding institute considering the ROI aspect. Don’t let yourself into the delusion that MBA is for learning and not for money. If that were the case you would be better off doing a Ph.D. rather than a job.