Honestly, I have no concerns. The church knows perfectly well how to get a Visa and how to have it expedited. If BYU has any issues, I'm sure they could reach out to the church for some pointers.

I wad called to Brazil right before the world cup and had Visa issues just like every other missionary. While waiting in Califronia, I met a member who was called to be mission president in Brazil. I asked him about his Visa and he said he'd already gotten it and had it for a while. And his papers were submitted way after mine. He told me the church knew what to do to get visas quickly, they just didn't do it for every single missionary, just the key leaders who had to get their Visa in time.

I'm sure the Visa situation is tricky with the war going on, but Egor will have more than enough support from people who really know what they're doing.