Celtic have confirmed the signing of Nigeria international Efe Ambrose on a three-year deal.
Ambrose, a 23-year-old defender, joins after a three-year spell with Israeli side FC Ashdod.
"It has been a long day, but it has been worth it," he told Celtic's official website. "Today is one of the happiest days of my life, signing for one of the biggest clubs in the world - a club I have known about since I was young.
"I just can't wait to get started, to play in front of the fans and call this place home. I would like to thank God for everything and to thank the manager and directors here at Celtic, who have placed their trust and confidence in me.
"The move to Israel really opened the door for me and gave me my opportunity. I had been to other clubs, but they were the ones who gave me my chance. For that I would like to thank the coaches and directors at FC Ashdod, my agent Dudu Dahan and also my colleagues and the fans - who all helped develop me as a player."
Ambrose, who can play anywhere across the back line or in midfield, said: "I am the kind of player who plays where it is of benefit to the team.
"If the manager trusts me to play in midfield or defence, then I trust him and I am the kind of player who will give 100%, whatever the coach asks of me."
Celtic confirmed their place in the Champions League group stage this week with victory over Helsingborgs, and Ambrose said he was delighted to be facing some of the finest sides in Europe.
"I have come here to find we are in the same group as Barcelona, Benfica and Spartak Moscow," he said. "It's a lovely group. You might call it the group of death, and it will be hard, but hard work always pays.
"I am just looking forward to meeting my team-mates now. There is no better place for me than Scotland."
Celtic also tied up season-long loan deals for Getafe striker Nicolas Fedor and Slovakia goalkeeper Lubos Kamenar from French side Nantes.