Manchester United hero Jaap Stam says Louis van Gaal must deliver at Old Trafford.
Stam is a veteran of United and PSV Eindhoven, which meet tonight in the Champions League.
The former Dutch defender said: "If you invest as much as Louis van Gaal has, then you get success.
"And everyone believes that they have already qualified against PSV for the knock-out phase."
Stam added: "I would prefer that both teams go through from the group.
"I would advise the PSV players not to have too much respect for Manchester United, because at home they have shown what they are capable of."
Source: tribalfootball.com