It's impossible to predict anything. We don't know the teams' form by now and we don't know what's going to happen in the transfer window. I know Countinho can't play CL if he comes to Barca, but if Mascherano leaves and we get hit by injuries, like the one Umtiti is fighting right now, it's not sure our start-11 will be the strongest. If we met right now, things would maybe go our way, but things always change before these matches appear on the schedule. So let's safe the debate about the outcome for later.
The thing I look forward to the most is Valverde. He tends to play for the result instead of playing for the win. This may be a giant advantage for us because last season we got horrible results when playing away in the knockout-stage. This killed the excitement too quickly. I hope this won't happen again. A 1-1 draw would be perfect.