Arsenal have tested two MLS youngsters over the past week.
Colorado Rapids striker Darren Yapi and Toronto FC winger Jahkeele Marshall-Rutty have both been training with Arsenal's U18 squad.
Yapi is a USA youth international, while Marshall-Rutty has been capped at senior level by Canada.
Dantouma Traore, also of the Rapids, is another who trained with the Gunners earlier this season.
Marshall-Rutty is interesting several major clubs across Europe.