Here we look ahead to Tuesday's opening round of group matches in the Champions League as Barcelona, Bayern Munich and Pep Guardiola's Manchester City kick off their respective European campaigns at 1945 GMT. Group A PSG vs. Arsenal: Under-pressure PSG coach Unai Emery makes his Champions League bow with his new charges after leading Sevilla to three consecutive Europa League titles. But on the domestic scene the loss of Zlatan Ibrahimovic and David Luiz, not to mention coach Laurent Blanc, seem to have left a hole in the club's charisma. The reigning French champion is seventh after four games having been beaten by Monaco and drawn with Saint-Etienne after conceding an injury-time equalizer at the weekend. Arsene Wenger's Arsenal has a history of doing well in France, but PSG will look to send an early statement of intent at the Parc des Princes. Basel vs. Ludogorets: The host is on a run of seven league straight wins, racking up 24 goals along the way, but the Bulgarian visitor will be desperate to make an impact here. Group B Dynamo Kiev vs. Napoli: Serie A runner-up Napoli warmed up for its third group stage campaign with an emphatic 3-0 win at Palermo, Jose Callejon netting a double. Dynamo, held 1-1 by Shakhtar Donetsk in the league at the weekend, has won six of its eight matches in all competitions this term, including the Ukrainian Super Cup. Benfica vs. Besiktas: Benfica was beaten by Bayern Munich in the quarterfinals last season while Turkish champion Besiktas will be trying to make it out of the group stages for the first time at the sixth attempt as it returns to the competition for the first time since 2009-10. Group C Barcelona vs. Celtic: Celtic faces a formidable task as it travels to five-time winner Barcelona, where the Scottish champion suffered its joint-heaviest European defeat — losing 6-1 at the Nou Camp in its last group stage participation in 2013. Despite failing to win its 14 previous trips to play Liga rivals, new manager Brendan Rodgers has been boosted by a perfect start to the season and an emphatic 5-1 win against Old Firm rival Rangers Saturday. Spanish champion Barcelona, which last won European's premier club competition in 2015, won all five home fixtures in last season's campaign, is reeling after a shock home defeat to newly-promoted Alaves in La Liga. Manchester City vs. Borussia Moenchengladbach: Pep Guardiola's first Champions League fixture as Manchester City manager will be against a club he knows well in German side Borussia Moenchengladbach. The clubs met in the group stage last season with City winning home and away to reach the semifinals for the first time before falling 1-0 on aggregate to Real Madrid. But the Spaniard believes City will have to up their game if they want to aspire to European greatness. Group D PSV Eindhoven vs. Atletico Madrid: Last season's beaten finalist Atletico Madrid takes on familiar foe PSV Eindhoven against whom it needed a quarterfinals penalty shootout win (8-7) after drawing 0-0 both away and then at home. Bayern Munich vs. Rostov: This is Carlo Ancelotti's Champions League bow with Bayern Munich, which brought in the affable Italian with his continental pedigree foremost in its minds after his success at AC Milan in 2003 and 2007 and at Real Madrid in 2014. Pep Guardiola's team cruised through the group phase last season and was eventually beaten on away goals by Atletico. But Tuesday's visitor, Russian newcomer Rostov, can only have a deep sense of foreboding as it travels to Munich for its Champions League group phase debut.
