An Arsenal legend Lehmann signed for the club in 2003 and had an amazing first year with the club as his team went the entire season without a defeat.
Lehmann left Arsenal in 2008, for VfB Stuttgart.
Cech was already a Chelsea legend before he signed for Arsenal in 2015, in his first game for Arsenal, Cech saw his new club defeat his old club in the Community Shield.
Cech holds the record for most Premier League clean sheets as well as the club record for most cleen sheets with Chelsea.
Winner – Cech
Cygan signed for Arsenal in 2002 and was only a fringe player, but was called in as the emergency left back after Ashley Cole and Gael Clichy both got injured.
Arsenal won 12 of the 20 matches he played in, and kept 11 clean sheets in the process.
Monreal scored the first goal in Arsenal’s 2–1 win over Manchester United at Old Trafford on 9 March 2015, which helped Arsenal progress to the semi-finals of the FA Cup.
On 30 May, Monreal played the for the entire match in Arsenal’s 4–0 defeat to Aston Villa at Wembley Stadium.
Winner – Monreal
Campbell join Arsenal in 2001 on a free transfer, during his five years stay with the Gunners he made 195 appearances, winning two Premier League titles and two FA Cup’s.
He scored Arsenal’s only goal in the 2–1 defeat to Barcelona in the 2006 UEFA Champions League Final.
Gabriel signed for Arsenal in the winter transfer window of 2015.
Gabriel was prone to making errors in the first few matches due to him not being able to speak English.
Gabriel made his debut for Arsenal on 15 February, playing in a 2–0 home win over Middlesbrough in the fifth round of the FA Cup.
Winner – Campbell
Touré had established himself as one of the best centre backs in the Premier League by 2005/06, and he was a regular Arsenal starting XI.
In the 2005–06 season, his partnership with Senderos was formidable, their partnership helped the Arsenal team reach the 2006 UEFA Champions League Final after keeping 10 consecutive clean sheets.
Laurent Koscielny signed for Arsenal in 2010, and was voted as the best signing of the season by fans.
Koscielny played a very important role as Arsenal won 5 games out of six in October that helped the Gunners go second in the Premier League, with Koscielny scoring in successive Premier League wins against Everton and Swansea.
Winner – Toure
Lauren signed for Arsenal for a fee of £7.2 million in 2000 and went on to make around 200 appearances for the North London outfit.
He was a starter for Arsenal before an injury ended his Arsenal career.
Bellerín was born in Barcelona, and started his football career in the youth teams of FC Barcelona before moving to Arsenal in the summer of 2011.
He signed his first professional contract with Arsenal in July 2013 and made his debut in an away game against West Bromwich Albion in the third round of the League Cup in September, coming on as a substitute for Mikel Arteta in a penalty shootout victory after a 1–1 draw.
Winner – Bellerin
Fàbregas is a product of Barcelona’s youth academy La Masia, and signed for Arsenal in September 2003 at the age of 16.
Injuries to key midfielders in 2004–05 allowed Fabregas to establish himself in the team. He broke several of the club’s records in the process, earning a reputation as one of the best players in his position, and won the FA Cup in 2005.
Coquelin joined Arsenal from Stade Lavallois after a successful trial in July 2008.
Coquelin played in the season’s opening game against Chelsea in a Community Shield win, though he missed two games in September against Leicester City and Tottenham with a minor injury. Coquelin’s season was halted by a knee ligament injury in a 2–1 defeat to West Brom that ruled him out for three months.
Winner – Fabregas
Pirès signed for Arsenal in 2000 for a fee of £6 million and had succesful spell at the club winning three FA Cups and two Premier League titles including the club’s unbeaten season of 2003–04.
Pirès was instrumental in Arsenal Quarter Final Champions League first leg against Juventus FC, where Arsenal won 2–0, in July 2008, Arsenal fans voted Pirès as the club’s sixth greatest player of all time.
Ozil joined the Gunners on the last day of the summer transfer window of 2013 for a fee of £42.5 million, he signed a five-year contract.
In 2015 he set a new Premier League record being the first player to assist in six consecutive matches and went to provide a total of eighteen assists throughout the season in the Premier League.
Winner – Ozil
Ljungberg signed for Arsenal in 1998 for a fee of £3 million. He spent nine years at the North London outfit and was voted the 11th greatest player to have played for the club in 2008.
Ljungberg became the first player to score in consecutive FA Cup finals after he scored against Chelsea.
The Welsh international Ramsey joined Arsenal in 2008 for a fee of £5 million, where he quickly gained first team experience.
Ramsey became a key player for Arsenal during the 2013–14 season, he scored 16 goals in all competitions, including the winner in the 2014 FA Cup Final against Hull City.
Winner – Ljungberg
Reyes signed for Arsenal at the age of 20 years during the January transfer window of the 2003/04 season for a fee of £10.5 million.
Reyes was an integral part of Arsenal’s 2005–06 Champions League campaign, playing against the likes of Real Madrid, Juventus F.C. and Villarreal CF, coming on as a substitute in the final against FC Barcelona, which Arsenal lost 1–2.
Walcott moved from Southampton to Arsenal in January 2006, for a fee of £5 million, rising to £12 million depending on appearances for club and country.
Walcott has made over two fifty league appearances for the club since joining them and has scored fifty five league goals, he won the player of the month award for September 2015.
Winner – Reyes
Bergkamp signed for Arsenal in June 1995 for a transfer fee estimated at £7.5 million from Inter, his arrival had a major impact on Arsenal’s fortune after a disappointing mid-90’s.
Wenger’s arrival was a turning point in his career, and the Dutch was pleased with Wenger’s imposition of strict fitness and heath regime. He played 315 matches for the Gunners and scored 87 goals.
Sánchez signed for Arsenal in July 2014 for a fee reported to be around £35 million, making him the second-most expensive signing in the club’s history after Mesut Özil.
A hat-trick for Arsenal against Leicester City made him the first player to score hat-tricks in each of the Premier League, Serie A and La Liga.
Winner – Tough, but Bergkamp
Arsenal legend Henry signed for the club in 1999 for a fee £11 million from Italian giants Juventus.
Henry emerged as the Club’s top scorer for almost every season during his stay at Arsenal, and ended up being Arsenal’s all time top scorer.
Giroud signed for Arsenal for £9.6 million in the summer transfer window of 2012, and made his debut against Sunderland as a substitue.
Giroud had a good start to the season scoring from an Ozil assist but a fifteen game goal drought followed. After which Giroud scored a hat-trick against Aston Villa to end 2015–16 with 16 goals in the Premier League and 24 in all competitions.