The Gunners snapped up Nice goalkeeper David Ospina this summer after the Colombian international impressed at this summer's World Cup in Brazil, with the 25-year-old expected to provide stern competition for first choice stopper Wojciech Szczesny.
Some believe that the Polish international's development has stalled in recent years because he hasn't had someone pushing him for the No. 1 jersey, despite his compatriot Lukasz Fabianski being second choice. The 29-year-old was predominantly used in cup competitions, but was let go at the end of last season when his contract expired.
With just 32 league appearances in seven seasons with the club after his 2007 move from Legia Warsaw, Fabianski was always a peripheral figure at the Emirates Stadium, often derided by Arsenal fans for his errors and poor displays for the Gunners.
Now, Fabianski has signed for Swansea City on a four-year deal, with new manager Garry Monk choosing to sell Dutch international Michel Vorm to Arsenal's North London rivals Tottenham in order to make room for Fabianski - making him the first choice goalkeeper at the Liberty Stadium in the process.
With the Pole set to start his first Premier League season as an undoubted starter, Fabianski has looked back on his time with Arsenal - but says he's already forgotten his time there and that it wasn't a difficult decision when it came to leaving - suggesting his time there wasn't a particularly happy one.
"It was not hard leaving Arsenal. I have already kind of forgotten about it. It's behind me," he said. "I had many wonderful years there. But I am a Swansea player now and want to focus on that."
Can Fabianski prove his worth with the Swans this season?