Pato joined Mikel at Chelsea on loan in January 2016 from Corinthians and scored on his debut in a in a 4-0 win against Aston Villa on April 2.
After making just two appearances, Pato returned to Corinthians.
Ahead of the game, Mikel stated he expects a very difficult encounter between the two teams.
“Looking forward to facing my former teammate Alexandre Pato this weekend v Tianjin Quanjian. Tough game awaits!” Mikel wrote on his verified Twitter handle.
Tianjin Teda are yet to win their first game of the new season after just one point from their two games played so far (one loss, one draw).
They are currently 12th on one point in the 16-team CSL table.