Arsenal striker Joel Campbell believes the loan spell away from the Emirates will improve his game.
The 22-year-old impressed during last summer's World Cup Finals but failed to secure a regular place in Arsene Wenger's line-up even after the departure of Lukas Podolski.
But the youngster is eager to improve so as to be a better player when he returns to Arsenal.
"My experiences abroad helped me a lot," Campbell told the club's official website.
"At Lorient I had my first spell in European football. I arrived in France aged 18 and I managed to play many games in the league.
"One year later I went to Betis in Seville. It was a very positive experience. I played around 30 games in La Liga which is one of the best three domestic competitions in the world.
"Then last season at Olympiakos I competed in the Champions League. I got a lot of confidence from the manager. Michel helped me build my confidence and gave me plenty of freedom to show my game.
"So far I've enjoyed this journey.
"I'm just 22 years old but I've played in France, Spain, Greece and England. I still have a long way to go but I hope not to get any serious injuries so I can work hard and just continue to improve."
