Is a Champions League return a must for Mauricio Pochettino in his first season at Chelsea?

After the Blues' dismal 12th-placed finish last term, what will equal a successful first season for Mauricio Pochettino?

Mauricio Pochettino is officially in place at Chelsea and his squad is steadily taking shape as he continues to ship out those that he deems surplus to requirements, including Mason Mount.

The new Blues boss will have high expectations of himself after returning to English football, but what should be deemed a successful first season at Stamford Bridge? Is a return to the Champions League a must, or will the rebuild take a while longer?