The probability that Arsenal loses tomorrow's game against Brentford is quite minimal. If they lose yet another game, it will be clear that they are not prepared to hold the title of Premier League Champions for this year. They are aware of what would be at risk for them if they lost against Brentford. They won't be as fortunate this time around as they were last week to see Manchester City lose their match as they did to Everton. They will get to see how Manchester City will overpower them to lift the PL title again if they lose other of their matches by mistake.
Arsenal will not lose to the Brentford team, Arsenal will provide resistance and it is likely that they will take advantage of the opportunity in this match to score lots of goals in order to get additional points that can make them even further away from the second position from the top of the standings so that Arsenal will remain safe in first place until the end of this league.
I know Brentford can be tough sometimes but arsenal just need to try their best to win this game, these is another opportunity for arsenal to add to their points after losing to Everton. If arsenal miss it today again that means they have started having problems just like Manchester City and it will be advantage for Manchester United to try harder to be ahead of this two big teams leading the Premier league. I'm believing to see arsenal win against Brentford.