Park Ji-sung believes Memphis Depay can be the key for Manchester United's trip to Holland on Tuesday.

The Red Devils take on both Park and Memphis' former club PSV Eindhoven in their Champions League group stage opener at the Philips Stadion.

It will be Memphis' first meeting with the Dutch champions since departing the club for United in the summer and Park feels he can be vitally important in their pursuit of victory.

"There will be mixed feelings before the match but, when he gets out there, he'll just do his job as a United player," Park told ManUtd.kr.

"He's a professional player and will carry out his role in the team and try to win the game for United. If he plays well and shows his ability, even PSV's fans will appreciate that.

"He has power, pace and technique, and he'll be important because he knows PSV better than anyone and can advise United on what to expect.

"And he'll also be comfortable playing in the Philips Stadion because he played there for several years. So he's one of the guys who can make an impact on the game."