The former France striker's impressive eight-year spell at Arsenal ended in 2007 when Henry joined Barcelona for $24 million, and he remains a revered name at the London club.
He will be up against his former club on July 31, when Arsenal and the Red Bulls meet on the second day of a weekend tournament also involving Argentine side Boca Juniors and French team Paris Saint-Germain.
Arsenal chief executive Ivan Gazidis says, "I'm sure all Arsenal fans will be looking forward to welcoming back Thierry Henry _ a true Arsenal legend."
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