#2 Lukasz Fabianski
The current West Ham #1, Lukasz Fabianski joined Arsenal as a 22-year-old in 2007, after he rose to fame with Polish club Legia Warsaw.
He was always utilized as a second-choice goalkeeper at the Emirates. His compatriot Wojciech Szczęsny established himself as the first-choice goalkeeper under Wenger.
Fabianski's stint in London was riddled with various injury spells, that eventually cost him the #1 spot at Arsenal. Although, he put up some notable performances for the club whenever he was called up in the first team, in 2014 he was let go by the club.
After his contract with Arsenal expired, he joined fellow Premier League club, Swansea City. He quickly became one of their key players, helping the Welsh club retain their first division status for three seasons.
This summer he joined West Ham United, after The Swans were relegated and he is second on the number of saves made charts, with 45 saves in 11 matches.