"Henry joined the New York Red Bulls last year and helped them reach the play-offs, where they lost on aggregate to San Jose Earthquakes in November."
Reports on Monday suggested that Henry will work with Arsenal's attacking players during his short spell at the club.
Gunners boss Arsene Wenger converted Henry from a winger to a striker after his arrival from Juventus in 1999 and the World Cup winner could be asked to help England wide man Theo Walcott progress in a similar direction.
Since the MLS season ended in November, Henry has spent time at his London home, attending Arsenal's home games on several occasions.
Henry was instrumental in heralding golden eras for club and country, winning two Premier League titles and two FA Cups during his eight years with the north Londoners.
He also won the World Cup in 1998 and the 2000 European Championships with France and finished his international career having won 123 caps, scoring a record 51 goals.
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