Diego Costa could miss the next six weeks amid reports the Chelsea and Spain striker has injured his hamstring.
The Daily Telegraph claims Costa was hurt on Wednesday in training and further scans are to take place to determine the extent of the damage.
Chelsea still hope Costa could be fit for the weekend’s Premier League game against Everton but the former Atletico Madrid forward is to be assessed before a decision is made.
Spain are due to play France in a friendly on September 4, with Costa a possible member of Vicente Del Bosque’s squad.
La Roja also meet Macedonia on September 8 in the first qualifying game for Euro 2016.
