Just like that, the league phase of the Champions League is halfway over and there were some notable performances. Sporting CP knocked off Manchester City, Brest stayed undefeated and Barcelona rang in the goals yet again.

Build-up to Champions League action as Ruben Amorim's Sporting face Manchester City and Xabi Alonso's Bayer Leverkusen travel to Liverpool plus Celtic in action.

The Leverkusen coach was given a warm welcome on his return to the club where he became a fan favorite as a player over five seasons between 2004-09. Alonso won the Champions League with Liverpool in 2005.

Manchester City is in its worst slump in Pep Guardiola's reign. The English champions lost a fourth straight game in all competitions as Brighton came from behind to win 2-1 in the Premier League on Saturday.

Manchester City has never had it this bad under Pep Guardiola. Guardiola has never had it this bad in his managerial career. A sense of crisis is looming over the champions of England after they lost a fourth straight game in all competitions,