Imminent Liverpool signing Sotiris Kyrgiakos has explained to AEK Athens fans why he is leaving the Greek giants.

"Last week I said I was an AEK player for the next four years and meant that," he said on his official website.

"But then I received the biggest challenge of my career.

"I fully understand it came at the worst possible moment for the team, but the fact that I had the chance to play for Liverpool is a huge challenge."