The midfielder completed a deadline day move from Atletico Madrid to Arsenal as the north London club activated his £45 million release clause.
Partey was Mikel Arteta’s priority transfer target this summer and arrives with a wealth of experience having spent five seasons in Atletico’s first team.
The 27-year-old will link up with his new team-mates when he returns from international duty with Ghana, and admitted he has been taken aback by the love he has received from fans over his move.
‘Hello, Gunners, thanks so much for the love, for the messages I’ve received,’ Partey said in a message on Arsenal’s Twitter account.
‘I can’t wait to be part of you guys, I can’t wait to join team.
‘It’s a great feeling to be part of a family like this.
‘Thanks so much to everyone for the love, I feel so grateful and so amazed to be part of you.
‘I can’t wait to join you guys and don’t forget, no Thomas, no Partey.’
Arteta was keen to add Partey as he felt his side were a little short in the middle of the park, and speaking to the club’s official website, the Spanish boss praised the midfielder’s character and technical abilities.
‘We identified him a few months ago and we have been following his progress, and obviously the more you know about the squad, you know more about where you think you can improve it,’ Arteta told the club’s official website.
‘We believe he has the right qualities, with his character and his personality and as well with his technical qualities and positional options that he can give to the team.
‘I have a few things in mind that I want to start to train with the team and [Partey’s signing] is going to give us a little bit more adaptability and more balance in defending and attacking transitions and the way we have to set up certain structures to attack better in certain moments of the game.’