After seeing Fabian Castillo taken off the field on a stretcher Sunday, FC Dallas fans were braced for bad news. After the match, coach Oscar Pareja said the initial prognosis was good and that Castillo would likely be out for a couple of weeks with an adductor injury.

It seemed optimistic. But the speedy winger, who led FC Dallas in scoring in 2015 and scored the opener in the team's 2-0 victory over the Philadelphia Union, says he could be back even sooner than that.

"Good. I feel good," Castillo said. "Fortunately it wasn't anything serious. Today we did some work to try and stimulate the muscle again. It's a little tight."

The Colombian said that his goal is to get fit for Saturday's road trip to Houston. He'll likely be listed as questionable for the match. Castillo worked out apart from the team Tuesday and plans to do the same Wednesday, but Pareja said he's optimistic about the chances he'll have Castillo available for the rivalry game.

"Obviously, we will take care of him as much as we can, but knowing Fabian and knowing his body and everything it may be very likely that he will be OK," the coach said.

Jon Arnold is an editor at Goal.com and BBC 5 Live's CONCACAF expert.

Twitter: @ArnoldcommaJon