The UEFA Champions League returns with another round of riveting league phase fixtures this week that will ask a handful of Europe's top teams to prove their worth just weeks into the competition. The headlining act of Matchday 2 is Paris Saint-Germain's trip to Arsenal, where the French champions will take part in a meaningful litmus test of their post-Kylian Mbappe plans against the well-drilled English side. It is not the only match that might be hard to predict – a clash between Bayer Leverkusen and AC Milan could be closely contested, as could Aston Villa's faceoff with Bayern Munich.

Teams like Real Madrid and Liverpool, meanwhile, aim to build upon their strong starts to the campaigns, while injury-ridden sides like Manchester City and Barcelona eye their first wins of the European season. Before the action begins, here's a look at expert picks and predictions from the CBSSports.com team.

Don't miss any of the Champions League. As always, you can catch all of our coverage across Paramount+ , CBS Sports Network and CBS Sports Golazo Network all season long. Here are our expert picks for this matchday: Tuesday Leverkusen vs.

Milan Player to watch: Florian Wirtz -- He's been as good a forward as almost any across Europe so far this season and even in quiet games he finds a way to make an impact on the scoresheet. Will the right flank anchored by Emerson Royal be able to keep its discipline and positioning when Wirtz goes marauding? If it isn't, expect the 21 year old to.