United will play Chicago Fire as part of their US preseason tour.
Klopas told manutd.com: "It’ll be an honour. What he has achieved for so many years at the top level is quite amazing. It’s not easy to manage a club of that size and consistently win trophies, but he’s done it and he’s been able to keep producing top teams.
"I have tremendous respect for him and he is a great person to learn from."