On the 19th of September, through their official Twitter page, SK Telecom T1 made an announcement that they're looking for League of Legends players who are aspiring to become full-fledged professional gamers. 

Here is the full translated text of their announcement:

"SKT T1 is looking for players who are aspiring to become professional gamers. Those who want to live out their dreams of a professional gamer, apply, now! GoGo!

Recruiting Period: September 19, 2018 ~ September 29, 2018

Requirements: At least Diamond 1 in the Korean League of Legends server. Must be born between 2000 ~ 2003. 

How to Apply: Fill out the google form provided in the link above and apply. 

Recruitment Process: Online tryouts, then offline tryout followed by an interview."