Harrison was released after more than a month in jail

The British Boxing Board of Control are satisfied with the results from medical tests the Scottish fighter underwent last week.

The 29-year-old champion returned to Glasgow last week after five weeks in a Spanish prison on assault charges.

Harrison had faced being stripped of his world title if he failed to defend it at London's Excel Arena next month.

A statement by BBBC general secretary Simon Block said: "Following consideration of a number of medical reports received, boxer Scott Harrison has been cleared to proceed with his contest against Nicky Cook scheduled for the Excel Arena on Saturday, December 9."

Harrison's manager Barry Hughes was delighted to receive the confirmation.

"Obviously we are over the moon at the decision," he said.

"That is all the barriers out the way now and Scott can just concentrate on the fight."

I've focused on nothing by Harrison since this fight was announced Nicky Cook

And Hughes believes WBO approval for the bout is now inevitable.

"We've had verbal confirmation from them," he continued.

"They will be sent the medical reports and obviously they will pass him seeing as they are perfect. From where it was four weeks ago to where we stand is remarkable."

Cook, a former British, European and Commonwealth champion, has also welcomed the outcome.

"To be honest, I've trained up until now with the mindset that the fight has always been on," said the 27-year-old.

"I've focused on nothing by Harrison since this fight was announced and now I'm just focused on winning the world title on the night."

606 DEBATE: Can Harrison get his career going again?

Harrison was arrested on 6 October after several alleged offences, including an assault on a police officer.

He faces another hearing in Spain on a date which is still to be set.

Harrison's imprisonment was the latest in a series of troubled episodes for the fighter.

He pulled out of his last fight in Belfast in May because of depression and alcohol issues.