According to F4WOnline the reason WWE is giving John Cena time off is due to unnamed personal reasons.
WWE United States Champion John Cena is not advertised for the post-Hell In a Cell RAW from San Diego or the November 2nd RAW from Denver and was not booked for WWE live events the weekend of October 31st. As of Thursday morning, Cena was advertised for the European tour that begins November 4th but was not listed for the November 16th and November 23rd RAW.
John then went to his instagram account to post a picture depicting a match with a flame and the words used on the picture were “fired up or burnt out?” This cryptic message could be his relationship with Nikki Bella or with World Wrestling Entertainment as a whole. Nikki has been perceivably “flirting” with her former boyfriend Dolph Ziggler on the WWE’s reality show Total Divas.
John has recently been in a with Seth Rollins for Cena’s United States title which he lose to Seth at Summerslam but was able to gain it back at the Night of Champions pay-per-view. John recently defeated Seth in a steel cage match in the WWE’s madison square garden event on Saturday night.
One wrestler who will come back to active competition will be Alex Riley. Riley announced via his Twitter account that he is returning to training after being absent
“This Tuesday I will finally return home to the sacred grounds of @WWEPerformCtr for the 1st time in over 4 months #ShallWeBegin #GotAHaveIt”
On May 2, 2015 it was announced that Riley would undergo surgery, to fix the degenerative arthrosis in his knee.
His last match was at the Andre The Giant Memorial Battle Royal where he was eliminated by Damian Mizdow.