Diego Costa has now missed two days of training with the Spanish national team. After being held out completely on Tuesday following medical orders from Chelsea and a "small hematoma in groin area", the striker trained separately from the rest of the group on Wednesday, though it's unclear just how extensive or intensive said training might have been.
Diego Costa underwent "specific work" during #ESP first training session on Tuesday after joining the squad with a slight groin problem #CFC— Ben Dinnery (@BenDinnery) November 9, 2016
The Daily Mail do have a picture of Costa in a long pants going through the motions, but according other sources like El Confidencial, the injury was considered possibly bad enough to be worthy of sending Costa back to Chelsea, before Spain coach Julen Lopetegui decided otherwise.
Diego Costa was in individual training with Spain today as he recovers from an injury that he sustained with Chelsea. pic.twitter.com/Q7PCyiEVXL— Chelsea Live (@chelsea90live) November 9, 2016
Sources do seem to agree that Lopetegui still expects Costa to be available for the qualifier against Macedonia (on Saturday) and the friendly against England (on Tuesday).