Benfica vs Barcelona

Hello everyone,

I am thinking of going to the UCL Benfica vs Barcelona game, and I have a few questions please.

1.The game is planned for 21.01.25. Would that be a confirmed date, or is there a chance of it being rescheduled, like with national league games?

My guess is that it's confirmed, but just checking because I have never attended a CL game.

1. How long before the game, are the tickets put on sale?

2. Can I bring in a decent sized backpack into the stadium?