Following Wednesday's goalless draw with Villarreal, Patrice Evra admits United are facing up to a tough challenge in trying to repeat last season's Double.

The Reds have just one win from five competitive games this season but, after the emotional glory of last May, French full-back Evra is still relishing the task of defending two major trophies this term.

"It's not extra pressure, it's just a massive challenge," he told MUTV after Wednesday's draw. "It's easy to win some titles when you play for United, but it's very hard to keep the trophies.

"You have the best challenge this year to prove that, to keep the Champions League and the Premier League.

"It is more difficult (as champions). You have to work harder in training every day, but I am just glad to have the challenge like that. When you go to play for United, you need challenges like that."

The Reds' tough start to the season will continue this weekend when high-flying Chelsea prepare to welcome Sir Alex Ferguson's side to Stamford Bridge.