Arsenal fans are in panic after Greek centre-back Sokratis was forced off midway through the first half against Manchester United in the FA Cup fourth round with a suspected twisted ankle.
After signing from Borussia Dortmund in a £17.7m deal last summer, the 30-year-old has enjoyed a fine debut campaign in north London.
But in worrying scenes for the Gunners, the Greek powerhouse seemed to roll his ankle whilst jumping for a heading with former Emirates star Alexis Sanchez in the 21st minute.
Despite receiving medical attention from the Arsenal physios, Sokratis signalled to the Gunners bench that he could no longer continue and was immediately substituted for Shkodran Mustafi.