Manchester United's already arduous season just got tougher.

The English champions were drawn Friday to face Bayern Munich in the Champions League quarter-finals, pitting them against the defending champions and the favourites.

"Perhaps they are not in the best form, but they are still a top team," said Bayern winger Arjen Robben, who scored a late goal to eliminate United from the competition at the same stage four years ago. "It's a good draw, we play away first."

In the other quarter-final pairings, Real Madrid will face Borussia Dortmund in a rematch of last year's semifinals, Spanish clubs Barcelona and Atletico Madrid will meet for a spot in the next round, and Paris Saint-German will take on 2012 champion Chelsea.

United and Barcelona will host the opening two matches on April 1, while Madrid and PSG are at home for their first legs on April 2. The return legs will be played on April 8-9.

Five-time champion Bayern will be looking to heap even more pressure on United manager David Moyes. United is a disappointing seventh in the Premier League and likely needs to win the Champions League to qualify for next season's competition.

Bayern, meanwhile, is unbeaten in 50 Bundesliga games under coach Pep Guardiola and leads second-place Dortmund by 23 points.

Dortmund beat Madrid in the semifinals last year before losing to Bayern in the final at Wembley Stadium. But Madrid is unbeaten in 31 games in all competitions, and Cristiano Ronaldo leads the Champions League with 13 goals this season.

"When you repeatedly make the last eight you have to count on meeting one team often," Dortmund coach Juergen Klopp said. "It could be an advantage that we first play in Madrid. It's no time to raise the white flag yet."

Three Spanish clubs reached the quarterfinals and at least one is guaranteed to play in the semifinals.

Although Barcelona has excelled in the Champions League, the Spanish champions have had an irregular season at home and have yet to beat Atletico in three games — all draws.

"Being an opponent we know can be helpful or not. There won't be any surprises," Barcelona goalkeeper Victor Valdes said. "They are a tough rival. We can't allow any goals at home."

For Chelsea, coach Jose Mourinho will need to come up with a strategy to stop Zlatan Ibrahimovic when the English leaders travel across the channel to face French champion PSG in the first leg.

Mourinho led Chelsea against PSG in the tournament's group stage in 2004-05, when the Blues won 3-0 in Paris before a scoreless draw at home.

Europa League draw

Juventus was drawn to face Lyon in the Europa League quarter-finals as the Italian champions look to stay on course to play the final in their own stadium.

FC Porto will meet Sevilla in a matchup between two former winners, while 2013 runner-up Benfica will take on AZ Alkmaar and FC Basel will play Valencia.

Juventus was the team everyone wanted to avoid in Friday's draw, with Antonio Conte's side currently 14 points clear in Serie A and likely to retain its Italian title with some ease.

Lyon won seven straight league championships in France from 2002-08 but isn't the force of old and will be the underdog over the two legs on April 3 and 10.

"It's a big one for us, how exciting to play in games like these," Lyon forward Jimmy Briand said on his Twitter page.

Juventus, which was bumped into the Europa League after finishing third in its Champions League group, has added motivation to win Europe's second-tier competition for a fourth time as the final is to be held at Juventus Stadium on May 14.

Sevilla, winner of the UEFA Cup — the pre-cursor of the Europa League — in 2006 and '07, came through a penalty shootout against local rival Real Betis in the last 16 on Thursday and was rewarded with a match against 2011 champion Porto.

Portuguese leader Benfica is looking to reach the final for the second straight season and will be favoured to at least qualify for the semifinals, with AZ arguably the weakest team left in the competition.

If Basel gets past Valencia, the Swiss team will emulate its run to the semifinals last season that ended with a loss against Chelsea.