"I am sure Marouane will settle in very quickly and be an integral part of United's success in the future, I really do," Round told the Manchester Evening News.
"He is a regular scorer with really good physical presence.
"When David came here he looked at the squad and thought one of the players we needed to bring in was someone with those physical attributes in the middle of midfield who could give us strength and aggression in certain games and maybe allow one or two of the others to play.
"That, coupled with his ability to score, made him feel Marouane would be a really good acquisition for United.
"When you get to work with him every day, you get to realise that technically he is excellent. His chest control is arguably one of the best in the world. You can bang the ball at him from anywhere and he will bring it down on his chest and bring others into play.
"His feet and his technique work are really good. He is aggressive and tackles. He also has great fitness stats.
"He is one of the highest runners in matches. He will regularly do over 12k a game and he can run, goodness me he can run.
"He is a lot better footballer than he gets credit for and he has good passing ability."
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