The Red Devils boss says the former Arsenal striker always caused his side problems, and has praised the former France international for his professionalism during his career
The Red Devils secured their fourth consecutive victory on their pre-season tour of America by beating the All-Stars 4-0 on Wednesday night.
New York Red Bulls striker Henry was part of the All-Stars side, and Sir Alex says the Frenchman always caused United problems during his days at Arsenal.
"He’s always a big concern with Arsenal, always a great threat to us," he told reporters. "I think he’s one of the few players that has scored regularly against us."
The United boss added: “Well, he’s still got that change of pace, and he’s always a threat because of it. And his experience, he showed his experience again tonight. He’s had a great career.”
The Scot also praised the former Arsenal striker’s professionalism throughout his career, labelling him a “good role model”.
“I think he’s definitely a legend with Arsenal, there’s no question about that," added Sir Alex.
"I think that’ll always be the case. His time there was fantastic and he’s always been a good role model in how he holds himself, as a footballer and a human being. He’s never wavered from that type of professionalism that you need to achieve that status."