Arsenal travel to Merseyside as the heavy favourites to collect the three points to strengthen their title push.
And while Merson believes that Everton will cause Arsenal a lot of problems, he cannot look past a win for Arsene Wenger’s men.
“You would think this was a gimme with Everton struggling like mad and Arsenal flying, but Tuesday night, under the lights at Goodison, it is difficult,” he said.
“I have been there enough times in my career and it's a hard place to win, even though they are not playing well. Any win for Arsenal would be great for them.”
Everton go into their match against Arsenal, having won just one of their last 10 matches.
Arsenal, meanwhile, have put themselves into title contention after a strong start to the campaign.
If the Gunners can beat Everton this evening, they will move above Chelsea and to the top of the Premier League standings.