WWE announced on Smackdown last night that Daniel Bryan will appear on Raw Monday night (which is being taped in London at The O2 Arena) in some capacity.
Since Raw is being taped well ahead of its airtime in The United States, it's possible Bryan could appear in some type of segment taped in The U.S. and then later edited into the broadcast if he doesn't actually make the trip to England. It has not been revealed, however, whether or not Bryan will appear in front of the live UK crowd.
It was announced on Raw this week that the WWE World Title situation will be addressed on Monday night, so if Bryan does indeed appear in front of the live crowd, he will likely be involved in the title segment, which could potentially see WWE strip him of the Championship.
As we reported moments ago, WWE expects Bryan will be out of action anywhere from 2-3 months as he recovers from his neck surgery, and that's if all goes perfectly with his rehabilitation.