Petrov prays Keane does not retire at end of season

STILIAN PETROV claims the performance of every Celtic player would drop 10% if Roy Keane was to hang up his boots.

Keane has indicated this could be his last season at the top as he continues to be troubled by hip problems.

But Petrov is praying Keane continues to play because of his influence on those around him. “He adds something to everybody’s game,” he said.