Pep Guardiola will return to the Nou Camp in the Champions League group stage after his new club Manchester City was drawn against his former Barcelona team Thursday. The two sides were drawn in Group C alongside Borussia Moenchengladbach and former European champions Celtic in one of the toughest of the eight sections. Spanish coach Guardiola, who won the Champions League twice with Barca, faced the Catalans when he was in charge of Bayern Munich two seasons ago and suffered a 5-3 defeat in the semifinals. It was one of three successive semifinal eliminations that Guardiola suffered in as many seasons at Bayern. Bayern, now under triple Champions League winner Carlo Ancelotti, will have a quick chance to avenge last season's semifinal defeat by Atletico Madrid after it was paired together in Group D along with PSV Eindhoven and group stage debutants Rostov. Holder and 11-time winner Real Madrid will have a tough pair of matches against Borussia Dortmund in Group F although both teams should progress from a section that also contains Sporting Lisbon and Legia Warsaw. The Polish team is back in the group stage after a 20-year absence. English Premier League winner Leicester City, the only other newcomer among the 32 teams, will face Porto, Club Bruges and FC Copenhagen in Group G. Porto is taking part in the group stage for the 21st time, a record it shares with Real and Barca. The double champion from Portugal has won only three of its last 16 ties against English teams in the competition. Paris St Germain and Arsenal, who are attempting to reach the round of 16 for the 17th time in a row, were drawn in Group A alongside dark horses Basel and rank Bulgarian outsider Ludogorets. Juventus, Serie A winner for the last five seasons, faces Sevilla, Olympique Lyonnais and Dinamo Zagreb in Group H. For the third season running Serie A has only two teams in the group stage. The other side, Napoli, will meet Benfica, Besiktas and Dynamo Kiev in Group B. Group E is arguably the most evenly-balanced with CSKA Moscow, Bayer Leverkusen, Tottenham Hotspur and Monaco. GROUP A: Paris St Germain, Arsenal, Basel, Ludogorets. GROUP B: Benfica, Napoli, Dynamo Kiev, Besiktas. GROUP C: Barcelona, Manchester City, Borussia Moenchengladbach, Celtic. GROUP D: Bayern Munich, Atletico Madrid, PSV Eindhoven, Rostov. GROUP E: CSKA Moscow, Bayer Leverkusen, Tottenham Hotspur, Monaco. GROUP F: Real Madrid, Borussia Dortmund, Sporting Lisbon, Legia Warsaw. GROUP G:Leicester City, Porto, Club Bruges, FC Copenhagen. GROUP H: Juventus, Sevilla, Olympique Lyonnais, Dinamo Zagreb.