The Chelsea legend has announced a deal with Shanghai Shenhua this week.
And United will face the Chinese mega spenders as part of their Far East preseason tour.
Shenhua captain Yu Tao: "We believe in ourselves and, of course, we want to win. When United arrive in Shanghai it will be pre-season for them and they will not be in their best condition, but we need to play at our best level. We've beaten AC Milan before, so we'll keep learning and hope to produce another similar performance."