https://www.hltv.org/news/35194/cloud9-to-replace-interz-forester-sanji-buster-among-candidates-report
Cloud9 are lucky that they don't have any tournament until the end of January. They can use this time to think well about their fifth member.
Firstly buster should be last resort. Because he hasn't played any pro game since mid May. It would be a big risk to take for Cloud9 while trying to stay as high as possible in the ranking. Forester and SANJI both played their last pro games in October. When we compare the contributions of these players to their teams I can say that Forester is a few steps ahead. He has many more games than SANJI in which he made a positive effect in total. Forester is a rifler his general performance as a fragger has been quite decent.