David de Gea
Made an super stop from an attempted Chris Smalling clearance early in the game and could do nothing about the goal.
The most senior of a youthful back four and despite a shaky opening 15 minutes, played his part.
Defensively, Jones really struggled, which will be worrying for the months ahead. Better on the ball and ought to be moved into midfield.
Solid when the ball is there to be won in the air and in front of him, but Wootton is susceptible to quick passes beyond him and fails to adjust his positioning quickly enough.
Strange performance. Looks to have the ability to eventually succeed Patrice Evra but couldn't cope at times tonight against the lively opponent.
Lazy in possession, Giggs frequently gave the ball away in midfield and lacked the intensity to spark United into life.
Missed a glorious chance before being substituted which really epitomized Cleverley's problems in front of goal.
Pushed out on the left, it was clear Powell was itching to do damage from the middle, but found it tricky given how packed it was in there.
Operated from the right of midfield and provided an extra dimension going forward - a ploy the manager might opt for against Manchester City.
He always needs watching in and around the box, but the visitor's defense had little trouble snuffing out any threat from the Mexican.
The stand-out performer, and did his chances for inclusion on Sunday no harm. Frequently got beyond the Cluj back four and caused problems with his pace and power.
Made two superb saves from Welbeck and Rooney in the first half, and continued to deny United with similarly impressive shot-stopping after the break. A real asset for his side.
A poor display as he failed to make much of an impact on the game when attacking in the final third.
Didn't look comfortable when Powell ran at him directly, but held his position in what was crucial to Cluj not becoming stretched.
Composed when faced with Welbeck and Rooney and was a threat from corners.
Good reader of the game and communicated well with his fellow defenders to nullify the attacking threat.
Defending ensured that Rooney affected the game less than expected. A solid display all round.
An exciting player to watch and always busy around the penalty area without causing many problems.
Every European team not expected to win away from home needs a sitter who uses the ball well, and Muresan proved just that.
Scored a stunning goal, good enough to grace any Champions League game. Otherwise, he was steady in possession and stood up well in midfield.
His direct running was always a problem, even for Chris Smalling. Kept his side ticking over in midfield.
Had a super opportunity in the first half but was well blocked by Wootton. Held the ball up well once one up.