Dortmund started the season great with 3 wins and 1 draw. They overplayed Leverkusen and Werder at home in the Bundesliga, shwoing great football again.
They sold Kagawa to Man United, but took fast and aggressive Reus to replace him, a really good player IMO. Anyway Dortmund kept their other key players and I expect them to perform much better in the CL compared to the last season. The stadium will be sold out and I expect the german side to start the competition winning the full pack of points.
Ajax will have some problems with the squad, due to injuries, but also they lost 3 of their key players, as van der Wiel went to PSG, Vertongen gone to Tottenham and Anito signed with Newcastle. The dutch team is playing offensive football and I cant see them parking the bus in Germany, as that would be negative for them for sure, so I see ajax opening spaces to Dortmund and I expect them to concede at least twice tonight.
Dortmund will use their home advantage tonight, winning with comfortable result but i think that we can see at least 3 goals.