According to The Wrestling Observer, John Cena is not scheduled to be part of the Clash of Champions PPV.
The Clash Of Champions pay-per-view event takes place on Sunday, December 17th, 2017 in Boston, Massachusetts at the TD Garden and will air on the WWE Network and some traditional pay-per-view outlets. This will be an exclusive SmackDown Live brand event.
Here is his updated WWE schedule:
— Tue. Dec 26: Madison Square Garden, New York, NY (RAW)
— Wed. Dec 27: Nassau Veterans Memorial Coliseum, Uniondale, NY (RAW)
— Fri. Dec 29: Times Union Center, Albany, NY (RAW)
— Sat. Dec 30: Amalie Arena in Tampa, FL (SmackDown)