Iwobi, who has been at Arsenal since he was eight, broke into the first team last season, scoring two league goals.
The 20-year-old, featured for the Super Eagles in their two international friendly games against Mali and Luxembourg.
Speaking to Arsenal Player on arsenal.com, Jonker praised Iwobi for his hard work and dedication.
“What makes [Alex] different from many other boys is that, when you
analyse him, he’s good at all aspects,” he told Arsenal Player.
“It’s not just him being a good player, he’s also a stable guy who’s
working hard every day. He’s not getting distracted by having a lot of
“When I came in, I remember he was about to go on loan after having a
knee injury and he was not that fit and not able to play 90 minutes.
Arsène put him on a training pitch and he did quite well. Then his
development started and he became some sort of a rising star.
“He played better and better in the under-21s, played quite well in
the under-19s and scored two brilliant goals against Bayern Munich, and
then he deserved his chance. He was named on the bench [for the first
team] and then Arsène gave him his chance and he was stable.