Costa has returned to the UK to have his injury assessed by Chelsea medical staff, according to reports.
The Chelsea striker has been forced to withdraw from international duties due to an injury sustained
The 28-year-old will miss the World Cup qualifier against Macedonia and the England friendly on Tuesday at Wembley.
ESPN are reporting, a source close to the player revealed that he has returned to Stamford Bridge to be examined by Chelsea staff.
The Spaniard will have his treatment with the Chelsea medical team in an attempt to get him back in time to face Middlesbrough on November 20
Costa is said to have aggravated a groin strain he picked up in the 5-0 win over Everton.
