Hoffenheim for Liverpool in the Champions League qualifier.
Decent side, only a couple of points behind Borrusia Dortmund in the league, and they were the last unbeaten team in the top divisions in Europe last season, not losing until January 18th. They were unbeaten at home all seaosn.
Also a win and a draw against Bayern in the Bundesliga last season so clearly well organised.
Could be very tough.