Manchester United will face a reunion with Cristiano Ronaldo after drawing Serie A champions Juventus in the Champions League group stage.

Ronaldo, who was at United between 2003 and 2009, joined Juve for £99.2m in July after nine years at Real Madrid.

Valencia and Young Boys are the other teams in Group H.

Tottenham have been drawn in a tough group to face Barcelona, while last season's runners-up Liverpool face Paris St-Germain and Napoli.

Eredivisie champions PSV Eindhoven and Inter Milan complete the line-up in Spurs' Group B and Red Star Belgrade are the other team to play Jurgen Klopp's side in Group C.

Premier League champions Manchester City were drawn in Group F alongside Shakhtar Donetsk, Lyon and Hoffenheim.

Last season's winners Real Madrid, who have won the competition for the past three years, are in Group G with Roma, CSKA Moscow and Viktoria Plzen.

Group stage draw in full:

Group A: Atletico Madrid, Borussia Dortmund, Monaco, Club Brugge.

Group B: Barcelona, Tottenham, PSV Eindhoven, Inter Milan.

Group C: Paris St-Germain, Napoli, Liverpool, Red Star Belgrade.

Group D: Lokomotiv Moscow, Porto, Schalke, Galatasaray.

Group E: Bayern Munich, Benfica, Ajax, AEK Athen.

Group F: Manchester City, Shakhtar Donetsk, Lyon, Hoffenheim.

Group G: Real Madrid, Roma, CSKA Moscow, Viktoria Plzen.

Group H: Juventus, Manchester United, Valencia, Young Boys.