Arsenal legend Thierry Henry knows a good player when he sees one. The Frenchman is one of the greatest footballers to ever play the game. He was absolutely unbelievable during his prime, and he’s still loved and adored by Arsenal fans. Henry, over the course of his career, played with and against some of the best players on the planet. He’s now a coach who views the game in a different way. When the France U21s boss speaks, you should listen, and Arsenal may have done that now. What Thierry Henry once said about Conor Gallagher as Arsenal make contactConor Gallagher could leave Chelsea in thi…