The 24 year old Swansea defender not underrating the experience Swedish striker, despite he is not in his goal scoring from, those two sides will meet against each other on his weekend.
According to the Dutch defender he thinks the veteran striker is the main man for the Manchester United though he is finding his life a difficult to adjust with the Red Devils in this season, and in his last few matches he did not scored a single goal for his side,
But still Swansea back for will try to lock him down in their match against Red Devil.
In his earlier club the defender faced the Swedish striker at Ajax and he wars he team mates that he is capable of scoring form any point of the ground.
"I have played against him before, he scored to put PSG ahead with a goal from nowhere,":the 24 year told told the official Swansea website.
"He has that rare quality of scoring when you least expect it. People can be fooled into thinking that he is having a quiet game and then he creates a moment of genius and scores.
"Manchester United have many, many good players but he is one we must do our best to keep quiet on Sunday."
The new signed defender Van Der Hoorn is finding it difficult to adjust him with the new English football, and also his team was unable to find a win in their last nine matches, and they are desperate to do well against Manchester united.
"It has been a very difficult start for us. Results have not gone our way and when you are near the bottom positions you find you often do not get the luck or the 50/50 decisions,"
"But all that matters right now is getting three points. A win over Manchester United would give the team a lot more confidence, which in turn gives you more freedom in your play.":he added.