Maurice Edu was the first player to report to US national team camp in California on Wednesday, but that didn’t necessarily sit well with Philadelphia fans wondering why he won’t be in Union colors for the team’s midweek game against Sporting Kansas City.

After all, Sporting KC’s two World Cup hopefuls – defender Matt Besler and Graham Zusi – will suit up for the match on Wednesday (8:30 pm ET, MLS Live) before joining US camp at Stanford University later this week.

A Philadelphia Union spokesperson told MLSsoccer.com on Wednesday, however, that the club intended to hold Edu out of the match as a precautionary measure due to a non-serious concussion issue. After it was decided by the club’s coaching staff that Edu would not play against Kansas City, he was allowed to depart for US camp in California.

Edu, 28, has appeared in 11 games for the Union this season, including a full 90-minute shift in the team’s 1-0 loss to D.C. United on Saturday.

He is trying to make this second consecutive World Cup roster after he was named to Jurgen Klinsmann’s 30-man preliminary roster earlier this week.