Nelson made his complete debut for the Gunners previous this week after beginning of their 1-Zero win over Doncaster.
He has shone at U23 stage this season, scoring six targets in simply 5 video games and remains to be most effective 17 years previous.
Arsenal have a proud report of selling academy gamers into the first staff, with Hector Bellerin and Alex Iwobi the maximum a success fresh examples.
And Henry, who coached the attack-minded midfielder all through his time serving to out at Arsenal, believes Nelson may well be the next to make the big step up.
“I worked with Reiss when I was at the Arsenal Academy and I was so impressed with him. He has all the attributes to make it,” Henry advised The Sun.
“At the Academy, he was once coaching and taking part in with the Under-18s — and he was once most effective 16. But he was once so excellent that, after two or 3 months, we felt he was once losing his time.
“He was once now not finding out the rest as a result of he was once too excellent for that ordinary.
“So he was once moved up to the Under-23s so he may paintings with more potent and larger guys.
“This child has all the ability to be knocking on the door of the first staff.”
He added: “Reiss has his head screwed on, he’s a well mannered child from a excellent background. Gatting and Laraman will stay his ft on the flooring anyway.
“But you understand whilst you a see a participant and also you simply need him to get the ball? He is that participant. He has that ‘thing’. The leisure is up to him.”