The Dallas Cowboys will be without their No. 2 wide receiver for up to a month, as Michael Gallup plans to have arthroscopic surgery to trim his meniscus, according to a report from NFL Network’s Ian Rapoport.

The surgery seems to be more preventative than anything else, and Rapoport reports that there is no structural damage in Gallup’s leg other than the meniscus tear, so recovery shouldn’t be too long. Still, Gallup is expected to be sidelined anywhere from up to 2-4 weeks, although other reports suggest that Gallup is currently seeking a second opinion on the off chance that surgery can be avoided.

While the Cowboys certainly have the offensive firepower to withstand Gallup being out for a bit, they will still miss him. As of now, Gallup currently leads the Cowboys in catches and has already proven to be a receiver that’s on the rise, catching 13 passes for 226 yards in his first two games.

Without Gallup, expect the Cowboys to possibly begin to involve Ezekiel Elliott more into their passing game, especially with the superstar running back getting more and more acclimated into the offense. After two promising games to start the year, the Cowboys are 2-0 and will look to continue that streak when they play the 0-2 Miami Dolphins next week. After that, it's games against the New Orleans Saints and Green Bay Packers, both of which promise to be good matches and likely a better test for just how good the Cowboys offense can be without Gallup around.