If i was at his side, i would join not betfury or any other casino. I think he could wait some days for the esports betting and meanwhile, there are almost 50+ live bets on different sports to choose from here
https://owl.games/sports.
I don't understand why you have such particular thought, I know you're promoting your casino as you wear the signature... but forbid someone to play in other casinos where you don't have the events that he is looking for isn't correct. Also he doesn't looking for live events, since both of esports and sports are different thing.
There's no official announcement too when the esports betting will be added, no one know if they're remove it permanently.