Both MLS stars shared their excitement about the impending arrival of the Australian midfielder from Everton, with the Frenchman revealing his new team-mate is only a medical away
Henry spoke glowingly about his future team-mate at a Major League Soccer press conference for Wednesday's All-Star game against Chelsea on Wednesday.
“Talking about Tim Cahill, he's going to be great," Henry said. "We're going to have to wait for him to undergo his medical. He’s going to be a great asset for us and also for the league."
New York paid a nominal fee reported to be in the region of £1 million to sign the Australia international from Everton.
But while Cahill showed signs of decline last season, scoring just twice, Henry believes the Red Bulls' newest Designated Player still has plenty left in the tank.
"If you saw the guy play the way he plays, I love the commitment and I always loved his commitment," Henry explained.
"He's great in the box, his headers are unbelievable. He fights back to the net and his football brain is great also. Hopefully that can be a plus for us."
Fellow MLS All-Star Landon Donovan also reflected on his former Everton team-mate's decision to come to North America, joking that he wished Cahill joined the Los Angeles Galaxy instead of New York.
"I didn't speak to Tim about this particularly. I would have preferred to have him in LA but it's a great opportunity for him and fingers crossed everything works out for him," Donovan stated.
"He always spoke very fondly of our league."
Donovan also said that many would be surprised how many European players ask about playing in MLS.
"Most players and their families enjoy the prospect of living in America," he added.
"There are a lot of pluses to playing here, and now when the league has made the sort of financial commitments they have made to players it sweetens the pot even more."