One of the rumors going around is that while Braun Strowman will be written out of The TLC Match against “General Manager-Elect” Baron Corbin and we will instead get some sort of Six-Man Tag Team Match, Strowman could return for a surprise appearance to beat up Corbin and cost him the match and his GM role.
This would then enable WWE to move forward with Alexa Bliss in the new GM role until she is cleared to return to action. The entire situation seems to be in a state of flux with multiple injury situations (Strowman & Bliss) affecting current storylines.