The Ukrainian champions came from behind to earn a 1-1 draw with the Premier League outfit at home in Group A.
"The result satisfies both sides," UEFA.com quotes him as saying. "United capitalised on our mistake and scored a fortunate goal.
"They are better than us on the break, but I wouldn't say they were in control of the game. I can hardly remember more than that one effort on our goal.
"The draw is not the worst option for either team, but we weren't thinking that before the match. I am happy we rose to the level of United and even got the better of them in certain respects."
Donetsk are currently at the top of Group A with four points from two matches.