Probably.  This was always the case though, i.e. ticket sales would only open once games had sold out.  In the past games have sod out quicker so Viagogo sales have opened in good time.  The demand does seem to be less this season for games. 

 ..well that is crazy because they are not giving people sufficient time to sell their tickets through the ticket exchange. The tickets are still not on sale for CSKA Moscow on Viagogo and there is only just over 24 hours to go .. and posted tickets are normally taken down from their website once the final 24 hours has elapsed anyway. Given this scenario, i'm not sure how you sell a ticket you do not want. I think they have changed proceedure since last year.

I suppose this is all because of lack of demand for tickets?

You can only sell tickets on Viagogo when the club has confirmed that the game is a sell out.  At the moment tickets are still on general sale via the club.

 .. Apologies if this has been covered in another thread. I wanted to sell my CL CSKA Moscow ticket on Viagogo but do not seem to have this option. Last year the CL tickets apperared on Viagogo at least a week before the game but this year this doesn‘t seem to be the case. I‘m not sure now how i go about selling this ticket now as time is running out. Am i missing something on there? .. or do we not now have the option to sell CL tickets on Viagogo? Many thanks, Adrian.