Other very interesting game will be Inter - Borussia. It's do or die game for Inter.
Will Barca will play against Slavia. Barca is playing good football lately, so with all respect to Slavia, I expect quite easy game.
I also will risk to bet on Valencia and Napoli wins. It's risky, but I see good value in these bets. Even I will win only one bet, it still would be good for me.
I agree with you about Ajax - Chelsea: a draw is the most likely outcome.
About the other matches, Leipzig vs Zenit and Inter vs BVB are very difficult to predict as well.
I predict easy win for Barcelona and Liverpool.