Obi, 17, made the switch from Arsenal to Man United last season after ripping it up across youth levels with the North London side.
The striker scored a ridiculous 32 goals in 23 games for Arsenal’s under-18s but left because he didn’t see a clear pathway into the first team.
When he joined Amorim’s side, he was almost immediately thrust into the first team, making eight appearances across all competitions but failing to score a goal.
Speaking ahead of Man United’s Premier League clash with Everton on Monday (November 24), Amorim admitted that chance came ‘too soon.’
“He (Chido) played last year, but I think it was too soon,” Amorim said when asked about Obi’s chances of stepping in for the injured Benjamin Sesko.
“We didn't have a team we could put a young kid of 16 into and him not struggle. He's one of the guys but he started too soon. Sometimes it's hard to deal with that, with the kids, because they think that 'I'm already here'. We need to be careful with that.”
Amorim also addressed the wider academy link: “When you call a kid up to the first team, they need to behave really well. This connection is really important. We are putting everything in place - a nutritionist for the academy starts now - in our club.
“That is something that should be basic. All these things we are doing, so I have more time with them and I'm more confident with them. When we put these kids in to play in the Premier League, they will struggle but will struggle less I think.”