Henry led the tributes on social media, describing Reyes as an 'exceptional human being'.
The Frenchman wrote: "I'm devastated to hear the sad news about Jose Antonio Reyes.
"Wonderful player, superb team mate and exceptional human being. I wish his family and friends continued strength and courage to get through this difficult time. #takenfartoosoon."
"To his family and friends, all support from everyone in the Arsenal family. He will remain forever in our hearts."