Harvin suffered a Grade 3 sprain on his left ankle in a 30-20 loss to the Seattle Seahawks on Nov. 4. The Vikings are 1-2 without Harvin in the last three weeks, with their only win coming against the Detroit Lions, 34-24, on Nov. 11.
Minnesota has lost two straight division games to the Chicago Bears and Green Bay Packers to fall to 6-6 on the year. The Vikings will host their fourth straight division game on Sunday when they host the Bears.
Despite missing the last three games, Harvin is still the team's leading receiver with 62 receptions for 1,446 yards and eight touchdowns. Harvin has also rushed 22 times for 96 yards and one touchdown this year.
The Vikings are averaging 180.6 yards per game through the air, which ranks last in the NFL this season.