Lance Dunbar out for three to four weeks with foot sprain

The Dallas Cowboys have announced that Lance Dunbar could be out for up to a month with a foot sprain.

The running back, who missed the NFC East side's practice today, has to wear a walking boot to aid his recovery.

A report on the Cowboys' official website claims that Dunbar will need three to four weeks to recover from the injury, forcing him to miss the opening few games of the regular season.

The 23-year-old hauled in a 43-yard reception during the team's 12-7 loss to the Arizona Cardinals at the weekend.