Parlour told Mirror Sport: "It's gonna be difficult for Aaron, because he's in that England squad and really wants to get an opportunity. He wants to play football, he's had that taste of playing week in, week out for Arsenal. I think it's at that time where you've got to make big decisions as a manager.
"The [Raya] deal was done, and it's not a bad deal really, £25m for a goalkeeper. But Aaron has now got to make a big decision about what he does, whether he sticks around and waits for his opportunity again or whether he says, 'Look, my time's up at Arsenal, but I'm gonna prove people wrong, prove Arteta wrong and start playing No1 for England.' So that's all he can do really - I think he will move on, because his appetite is to play every week.
"It'll be sad to see him go, but you've got think for yourself sometimes for your own career. And if it's going nowhere and you miss two years of it, you'll regret it in the end. So I think Aaron's got to make a big decision with his family and the club. Whatever club he goes to, I'm sure they're gonna get a top-class goalkeeper."