It is a chance of a lifetime for the striker...
The former PSV Eindhoven midfielder plays for Vietnam league team Hoang Ahn Gia Lai (HAGL), a club that has a partnership deal with the Premier League giants.
Thailand acting coach Steve Darby told Goal.com that the training is part of the ongoing relationship between the two clubs.
"Lee Nguyễn will train with Arsenal’s B-team,” Darby said.
“This is a part of the cooperation agreement to build a Soccer Academy in Vietnam and advertise HAGL’s name at the Emirates Stadium.
“He will go to London in September and train for a month.”
Thailand striker, and club-mate, Datsakorn Thonglao was also due to head to London but stayed at home to be with his sick child.