Efe Ambrose signs new Celtic deal

Celtic's Nigerian centre-back Efe Ambrose has agreed terms on a four-year contract extension at the Glasgow club.

Ambrose, who joined the club last summer from FC Ashdod, originally had two years to run on his deal but will now remain at the club until 2017.

"I have thoroughly enjoyed my time at Celtic so far and I am absolutely delighted to extend my stay at such a fantastic club," he told the club's official website.

Ambrose made his 55th appearance for Celtic in the narrow defeat to Barcelona on Tuesday.