RFTP said:
These scenarios;
1.If Pool ends 4th and wins the CL, they don't have to qualify
2.If pool ends 4th and doesn't win the CL, they must qualify
3.If Pool ends 5th or 6th but win the CL, they'll get automatically qualified for CL, BUT the team that finished 4th will lose it's CL place.
I'm pretty positive about number 2 and 3 but little uncertain about number 1 but I still think it's that way cause the basic rule says that the winner of CL gets an automatic place for CL next season.