Barça will face the Premier League side in the play-off round
Barcelona have been drawn against Manchester United in the Europa League playoff round on Monday.
Barça coach Xavi Hernandez described it as the "worst draw" his side could get after they were paired with Bayern Munich and Inter in the Champions League group stage.
United reached this round after finishing second in their Europa League group behind Real Sociedad.
The first leg will be played at Camp Nou on Feb. 16 and the return game at Old Trafford on Feb. 23.
Full Europa League playoff draw:
Barcelona vs. Manchester United
Juventus vs. Nantes
Sporting vs. Midtjylland
Shakhtar Donetsk vs. Rennes
Ajax vs. Union Berlin
Bayer Leverkusen vs. Monaco
Sevilla vs. PSV Eindhoven
FC Salzburg vs. Roma