Arsenal director Josh Kroenke has reportedly starting having doubts about head coach Unai Emery.
The former Paris Saint-Germain, Sevilla and Valencia boss replaced Arsene Wenger in the summer of 2018 and was tasked with getting the Gunners back into the Champions League.
However, a dramatic late-season collapse saw Arsenal miss out on the top four and lose in the final of the Europa League, consigning them to another season in Europe's second club competition.
"It was a bit more by luck than design that they [Arsenal] finished as high as they did last season," McGarry said in quotes reported by The Sun.
"And there's a little bit of doubt creeping into the Arsenal hierarchy about Unai Emery, specifically with Josh Kroenke.
"They're not close to sacking him, that's not what we're saying here, but what we've been told is that they didn't want to invest a huge amount of money on the basis that 'we have to suck it and see' with this guy.
"He's got a lot of things right and he's got some things wrong, as we saw against Watford last weekend when they couldn't have got it defensively more wrong."
Arsenal made big strides towards overhauling their squad this summer, but despite the change in personnel Emery's side have started the season in stodgy fashion, being out-shot by their opponents more often than not.body check tags ::