Wenger has a long history of snapping up youngsters from the Nou Camp, dating back to Cesc Fabregas' move to the Gunners a decade ago.
More recently, Jon Toral and Hector Bellerin have made the same journey.
Barca are hopeful of signing up the teenager of Moroccan descent to a long deal.
温格有从巴塞签小妖的习惯，同时拜仁和大巴黎对此人也有意。