Ole Gunnar Solskjaer was pleased with the performance of James Garner and Brandon Williams in the 1-0 win over Partizan Belgrade on Thursday.
The two teenagers were thrown into the deep end in Serbia, with Solskjaer giving his man-of-the-match vote to fullback Williams.
He said: "I thought Jimmy grew into the game, did really well in the end got tired in the end which is normal. And Brandon MOTM absolutely excellent, fantastic attitude, great defending, great in the air, gets us the pen by driving the ball forward, brace, we have found a left back there.
"The atmosphere was excellent, intimidating but we gave them loads of encouragement our players had to step up and calm the crowd down we couldn't but Brandon I don't think he put a foot wrong."
