Carlos Vela will not play a role in Mexico's crucial World Cup qualifiers at Costa Rica and at home against Honduras in early September.

Vela has been ruled out for the next month due to an ankle injury, the Mexican Football Federation announced Sunday.

Vela's club, Arsenal, performed an MRI exam and results revealed that Vela would need a month of rest to recover.

"He came back injured," Arsenal manager Arsene Wenger said. "This is one of the problems with international football."

The FMF said in a press release that Vela's injury grew worse upon his return to England, and that the FMF had been in close contact with Vela.

"Upon returning to Arsenal, he injured himself and underwent some initial exams, which resulted in immobilization of his ankle. That led to more studies to determine the severity of the injury," the release read.

Against the United States on Aug. 12, Vela came off the bench early in the second half. In the CONCACAF Gold Cup final, Vela did the same but had more of an impact as he scored a goal in a 5-0 rout over the Americans.

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide - from Peter King, Tom Verducci, Lee Jenkins, Seth Davis, and more - delivered straight to you, along with up-to-the-minute news and live scores.