From the 2016 CL Regs
5.7. In the event of a team being withdrawn from this competition during any round, results, points and goal statistics will be adjusted as though the team concerned never existed. If a team withdraws from the CL, it will not be eligible to participate in the CL for a period of 3 years, regardless of the Club’s finishing position in its Federation League.
I am guessing that will mean no relegation but still a playoff for the spot ?