Sokratis was previously been linked with a move to Manchester United, but has instead opted to join Arsenal.
The Gunners officially unveiled their third signing of the summer on Monday with the Greece worldwide signing a long-term contract at the Emirates.
The 30-year-old central defender, who has played for AC Milan and Werder Bremen in the past, arrives at the Emirates with a solid reputation and is the third signing of the Unai Emery era.
Emery is attempting to address the defensive problems that saw Arsenal concede 51 Premier League goals last season as they finished sixth - their worst campaign under Arsene Wenger.
LeBron James agrees $154 million Lakers deal He has opted against penning a five-year max contract with the Cavaliers , who could have offered him a projected £154m deal. James alone can change a conference - no non-LeBron team has made the Finals in the Eastern Conference since 2010.
There had been rumours for weeks about the Greek defender making the switch from Borussia Dortmund and now everything is official.
The Greek global had always been linked with a move to Unai Emery's team, who had struggled with defensive problems in recent years under previous manager Arsene Wenger.
'It's a attractive moment and I'm very happy that I will be here for the next years, ' said the defender. "They said to me the best thing about this club is that it's one big family".
He'll bring some much-needed experience to Arsenal's back-line, with the reported fee said to be £17.6m - pretty cheap in this day and age. "Arsenal are one of the three biggest teams in the Premier League", Papastathopoulos told Arsenal's website.
"So my name Sokratis Papastathopoulos, but the people and my teammates, they call me Papa", he revealed.
James finished second in MVP voting, amassing 738 points, behind only first-time victor James Harden of the Rockets (965). Per Vardon, a source close to James said James would not be involved in any of these initial meetings with teams.
In fact, James might not even speak with top team officials before making a decision on his destination for next season. LeBron was welcomed to the side by some of the best players from the Lakers, Kobe Bryant , and Kareen Abdul-Jabbar.
Prices to (sic) high! Trump said in a tweet he had asked the king for such an increase and the king had agreed. This is one of Trump's plans to pressure the US' allies into cutting off funding to Iran.
I have a very strong partnership with Davinson Sanchez and Kane will not have an easy time against us. The Three Lions are bidding to reach the last eight of the World Cup for the first time since 2006.
In less than a day, a GoFundMe site set up for Schaffer raised more than $50,000 to help with medical expenses and travel . She underwent a double leg amputation after suffering life-threatening injuries from the incident.
Labour MP Thangam Debbonaire said "there should be a product recall until we know what [caused] yesterday's tragic death". Police cordoned off a children's play area on Gorleston beach where people had been basking in the hot weather.
He produced one of the highlights of the day when his tee shot on the 201-yard par-3 ninth went with inches of going in the hole. They are four shots off the lead in a tie for 10th after shooting three-under par 67s. "We did a few things I'm very proud of".
The Paris Saint-Germain forward broke the deadlock shortly after half-time in the last-16 clash by poking home from close range. After their slow start it was ultimately no more than the Selecao deserved, as their bid for a sixth world title marches on.
Melania Trump visits Phoenix for migrant children
Ahead of her border visit, Melania Trump dons a jacket that says 'I really don't care. "She does not care about these children". Another classroom had five cribs lined up against a wall. "Como estas?" the first lady said in Tucson , greeting the children.
Knifeman attacks children's birthday party in Idaho
The knife used in the stabbing was discarded before his arrest, and police searched the complex and a nearby canal for the weapon. Timmy Kinner was charged with wounding six children and three adults in the Saturday night attack at a Boise apartment complex.
Belgium vs. Japan - Football Match Report
Belgium very almost responded instantly, with Eden Hazard rocketing a shot off the post just after the reset. After catching a corner, Courtois rolled it to Kevin De Bruyne, who found Steven Meunier on the right wing.
Game over for Messi's Argentina, Ronaldo's Portugal
Portugal hasn't reached the World Cup quarterfinals since 2006, when a young Ronaldo led the team to the semifinals. Edinson Cavani gave Uruguay the lead after just six minutes of play, heading home a Luis Suarez cross.
LeBron James leaves Cleveland Cavaliers for Los Angeles Lakers
Oh, yes, there were memes on memes on memes, and it all starts with a great call-back to that photo from the 2018 NBA Finals. The Cavs are now faced with a roster that has more than $102 million in guaranteed contracts, and little chance to contend.
Mbappe to donate world cup match fees to charity
Mbappe-affiliate charity Premiers de Cordees - a children's charity which focuses on the disabled - will also benefit. And he has helped them well on their way to completing that goal - bagging two in the last-16 clash with Argentina .
Bill De Blasio Calls for ABOLISHMENT of 'BROKEN' ICE
Lake added: "Voters believe we need some enforcement of border security - not just for immigration, but for security". More than 2,000 children remained detained and separated from their parents under US immigration policies.