The German international will complete a move to the club when the transfer window re-opens in June for an undisclosed fee, believed to be in the region of £10.6 million.
Podolski hailed Gunners and boss Arsene Wenger as he believes everything about them as a team made it an easy decision for him to move to the Emirates.
He told Goal.com: "They have the same colours as Cologne. I'm just kidding. As I've told you I've had more offers. I want to play for a top club when I leave Cologne. If you have a look at Arsenal, they have a very good manager and they have a nice environment - no negative headlines during the last years.
|COOL HAND LUKAS
|22/1||Lukas Podolski is 22/1 with Sportingbet to finish as top scorer at Euro 2012|
“They play good football and they have a great stadium with great fans. I haven't been there before but that's what I expect. I think the club will fit very well with me. Otherwise I wouldn't have come to this decision."
The 26-year-old revealed it was a tough choice to decide to leave Cologne after three years at the club but felt to further his career, he needed to move away.
"I would like to reiterate that my decision shouldn't be something that reflects on Cologne negatively, but rather something that reflects Arsenal positively," added Podolski.
"For me it was a choice between staying at Cologne for a few more years, or to go to a top club.
“I saw the opportunity that Arsenal were offering, and I had few other offers too. I had to think hard about what I wanted both on and off the pitch, and came to the conclusion that Arsenal was the best choice."