Arsenal star Leandro Trossard and Thierry Henry know each other fairly well. The legendary Frenchman has not been around the club too much to interact with the Gunners attacker, but the duo spent time together in the Belgium national team. Henry was Roberto Martinez’s assistant when the latter was the manager of the Red Devils. He worked with several incredible players there and gave them a lot of advice. Trossard was one of them, and he has benefitted from the Arsenal legend’s training. How Thierry Henry helped Arsenal star Leandro TrossardTrossard has always been a brilliant player. The Belg…