FC Barcelona vs Celtic FC. I'm sure this match will have many goals and at least Celtic can make 1 goal, I pick both teams to score and over 3.5 goals.
Manchester City vs Borussia Monchengladbach. Manchester City -1 and over 3 goals.
I doubt over 3.5 goals I think only 3 goals no more and only barcelona scored
Barcelona vs Celtic - Barcelona -1
Man City vs Monchengladbach - Man City -1