Ole Gunnar Solskjaer’s side came from behind in east London on Saturday to clinch a 3-1 win and move to fourth in the Premier League table.
Tomas Soucek gave West Ham a deserved lead at the London Stadium and David Moyes’ side should have extended their lead during a dominant opening 45 minutes.
Solskjaer brought on Bruno Fernandes and Marcus Rashford at half-time and the changes had an almost instant impact, with Pogba rifling home a brilliant long-range effort to equalise.
Greenwood then controlled a difficult cross and converted in style to give Manchester United the lead, before Rashford put the game to bed.
Asked about Pogba’s goal, Hasselbaink told Premier League productions: ‘It’s all about this. Paul playing higher up the pitch. This is what he can do.
‘That is brilliant! Mucking about going deep, no, he needs to play higher because he can get chances like this and he can put them away and do something special.
‘It’s a brilliant, brilliant goal.’
On Greenwood, the former Chelsea star said: ‘It’s 100 per cent instinct. He’s not thinking, he’s just going with the flow.
‘He should be so proud of this goal because this is not an easy goal. Normally you’d need three or four touches to score from there but he doesn’t.
‘I would have been very, very proud of that goal.’
‘He’s a great finisher, he always has been,’ Owen added.
‘It’s the most technically difficult chance and his two touches were immense. It’s a sensational goal.’