Samaras joins West Brom
West Brom have completed the signing of Greece international Georgios Samaras on a two-year deal.
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The striker has joined the Baggies on a free transfer but will not play in Saturday's Barclays Premier League trip to Southampton.
He was available after leaving Celtic in the summer following six years in Glasgow.
Malaga and Southampton were interested in the 29-year-old, who joined Celtic from Manchester City in 2008, but the Baggies were Samaras' first choice.
"We've signed a player with vast experience and I'm delighted to welcome Sami to the club," head coach Alan Irvine told the club's official website.
"He has played a lot of football at the highest levels - Champions League, European Championships and World Cups - and the feedback we've got on him, from people like Neil Lennon, states he thrives on the big occasion.
"He will certainly play in plenty of those in the Barclays Premier League.
"Georgios has played in big games for a Celtic team that have often had a lot of the ball and have had to work hard to break the opposition down.
"But he has also shown another side to his game in other matches when they haven't seen as much of the ball."
Samaras joins £10m club record signing Brown Ideye at The Hawthorns this summer and, with Saido Berahino and Victor Anichebe available, Irvine is pleased with his attacking options.
"We have now got four strikers with different qualities who can be used in different ways," added the Scot.
"That's great for us, because we need to have flexibility, the option to approach games in different ways and cover for injuries.
"I'm absolutely delighted with the four strikers we have."
Samaras told the club's official website: "I'm more mature now and know football better than when I was younger.
"I had seven beautiful seasons at Celtic and I'll keep all those good things.
"Now it's a new start and challenge in my career, and I'm looking forward to that.
"As a professional footballer you want to get better and better and I believe I have changed from 22 to now, like anybody would in any job."
Southampton and Malaga were interested in the Greece international, who helped his country reach the last 16 of the World Cup in the summer, but Samaras chose Albion.
"It was an easy decision for me to come here," he said.
"I had a really nice chat with the gaffer; he's Scottish so we spoke our language. In the end I believe this is a new challenge in my career and I'm ready to take it."