"It's certainly harder for younger players breaking through now like I did, so it may be tough to beat and the longer I can go it will be tougher as well".
Wenger has hailed the midfielder's longevity and says only City's greater financial power stopped him from signing the player eight years ago.
Although not interested in signing Barry for several years now, the Gunners were chasing Baggies colleague and three-time Premier League victor Jonny Evans during the summer.
Having joined West Brom from Everton for £1m, Barry has proved he is still capable of playing at the top level - with so much experience behind him, Barry is set to break Ryan Giggs all-time Premier League appearance record on Monday night against the Gunners.
"I believe that it's an outstanding achievement and that he's a player who is intelligent, determined, strong in the challenge, has good technical quality and I personally always rated him highly".
Rohingya Refugees To Receive $32 Million In Aid From US
ARSA was established in October 2016 on behalf of over 1.1 million Rohingya people living in the Myanmar state of Rakhine. He said he had arrived in Bangladesh two weeks ago after soldiers and civilian mobs burned his village.
Sanchez played the whole game, just as he did in last week's Europa League opener against Cologne, in which he scored. Even when you play 500 games you think you're coming to the end of your career and you're not expecting to play many more games. But at the time, City was the big investor.
West Brom boss Tony Pulis had a fine transfer window as he radically improved his squad - but it could be a one-off What time is kick-off?
Wenger continued in his praise of Gibbs: "He has become an English global here".
However, he says striker Danny Welbeck is still expected to be out of action until after the next global break.
Forrmer Arsenal defender Kieran Gibbs, meanwhile, will make an appearance against his old side for the first time since leaving the club in the summer.
"It is down to the fact that he can remain fit or not", Wenger was quoted as saying on the club's official site when asked about the chances of Wilshere earning a new deal.