The 48 clubs contesting this year’s competition were split into 12 groups of four teams, with matchday one kicking off on September 9.
United, who beat Ajax to win the 2017 Europa League final, were drawn in Group L, alongside Astana, Partizan Belgrade and AZ Alkmaar.
Manchester United will hope to repeat their 2018 Europa League success this season
Arsenal were beaten finalists last season after being thrashed 4-1 by Chelsea in Baku
Steven Gerrard will again lead Rangers into Europe, and must negotiate a tricky Group G
Last season’s beaten finalists, Arsenal, who were thrashed 4-1 by Chelsea in Baku, were drawn in Group F along with Frankfurt, Standard Liege and Vitoria SC.
Wolves were drawn in Group K and spared the competition’s big guns after Besiktas, Braga and Slovan Bratislava were named their opponents.
Meanwhile, Steven Gerrard’s Rangers were handed arguably the toughest draw of the British clubs, with Feyenoord, Porto and Young Boys awaiting them in Group G.
Wolves will be happy with their draw, with Beskitas, Braga and Slovan Bratislava awaiting them
Bitter rivals Celtic, who missed out on Champions League qualification after defeat in the third qualifying round, face Lazio, Rennes and CFR Cluj in Group E.
Matchday one kicks off on September 19, with the group stage fixtures concluding on December 12, with the top two teams in each group advancing to the last-32.
All 48 clubs will learn their exact group stage fixture schedule within two hours of the conclusion of the draw.