Chris Smalling has admitted that Manchester United have left themselves with "a lot of hard work" to do following their 0-0 draw with PSV Eindhoven in the Champions League.
A victory would have sealed their place in the knockout phase with a game to spare, but they were left frustrated by a toothless display in front of their fans.
To ensure their place in the last 16, Man United must now beat Wolfsburg in Germany in a fortnight.
"We had more than enough to win the game and make the difference in the final game," Smalling told BBC Sport after the final whistle.
"We needed to move the ball quicker and if we got the first goal it would've made it a lot easier.
"Coming in we saw Wolfsburg as the toughest game and we have given ourselves a lot of hard work. We go there with hope because we have beaten them here."
Man United currently lie in second place in Group B, one point behind Wolfsburg and one point ahead of PSV Eindhoven.
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