The Dutchman joined Arsenal in 2014 before leaving to take over the VFL Wolfsburg job in 2017.
During his time at the club though he worked with a number of youth prospects that have gone on to become first team squad members, including Reiss Nelson, Bukayo Saka and Joe Willock.
“At Arsenal, we had about 250 youth players,” he told The Sun.
“I was convinced three of them could make it all the way to the Emirates and the English national team.
“One is Nelson, one is Marcus McGuane and the other one is not there yet, he’s younger. Maybe I will mention it one day.”
Jonker is now the manager of SC Telstar in the second tier of Dutch football, where he signed McGuane on loan from Barcelona.
A number of players that have graduated from the academy have also made an impression this season, with Eddie Nketiah, Saka and Willock all making at least five Premier League appearances so far.