#2 Why was Daniel Bryan chosen to be a wild card?

It's been announced that WWE has chosen Daniel Bryan as one of the wild cards from SmackDown Live to be on this week's Raw. The most important thing to note is that he was chosen by the WWE to be a wild card, and it was not his choice.
Daniel Bryan is one half of the SmackDown Live Tag Team Champions with Rowan. He's been staying low key since he lost the WWE Championship to Kofi Kingston at WrestleMania.
The reason behind that is said to be WWE trying to keep him safe from taking major bumps during his matches. Daniel Bryan had supposely sustained a concussion after his match at WrestleMania, and that could be the reason WWE moved him to the tag team division.
It's still unclear why WWE has chosen Daniel Bryan to be on this week's Raw. But the next question might give us a hint.