No other details are available but Khan said that a challenge was issued at an airport and it was caught on video. Khan said he would sanction the match.
It sounds like this may be related to Kenny Omega but that is not confirmed. Khan said he would announce the match tonight. We will post an update once the match is announced.
Khan's tweet: "A challenge was made today for an important match to take place Live on #AEWDynamite next week. It was captured by a paparazzo at the airport, & having seen the footage, absolutely I’ll sanction this match for Dynamite. We’ll post the video challenge + announce the match tonight!"