Chris Jericho will not be making a surprise appearance during the January 28th Royal Rumble event as he will be off tour with his band Fozzy from January 28th to February 13th.
In regards to when he could actually return, it’s being speculated that he may return for the RAW 25th Anniversary show on January at the Manhattan Center in New York City but it would probably be for just a one-off appearance.
