The former Arsenal trainee, 17, made his first two senior appearances for the USA in this month's clashes with Wales and Panama.
Boothroyd said: “I spoke to Yunus's father. I know a few coaches in the senior staff spoke to the family as well. We put our hat into the ring.
“We are keeping a close eye on things. This is the priority where we are at the minute.
“But he is a very good player and we have got to do our jobs and keep an eye on him."