Writing in his weekly column, Merson feels Everton have a good squad of players but are vastly underachieving with boss Roberto Martinez largely to blame.
“I don’t know why he doesn’t get more stick. He’s got one of the best teams in the league and they are massively under-performing,” Merson explains.
“The amount of goals they are letting in is unacceptable and you can’t blame it all on John Stones. He’s told to the play the way he does by the manager.
“Martinez is supposed to be one of the brightest managers around but you can’t keep on doing the same things and getting the same results.
“It’s not good enough. I know plenty of Everton fans have turned against him. But why isn’t he getting more stick? It’s unacceptable.”
Everton experienced an excellent debut campaign under Martinez, recording a league double over Manchester United, a club record Premier League points tally and a fifth place finish.
However, despite some lavish spending and the emergence of a number of really good young players, the Toffees have somewhat declined since then and this season has been a struggle.
The Merseyside club currently sit in 12th position, having won only six league games all season and conceding a disappointing 34 goals in 23 matches – no team above 16th has conceded more.
Everton made the decision to appoint Martinez in order to move on from the defensive-minded David Moyes era, yet they’ve seemingly become too open these days and results are suffering.
The former Wigan Athletic boss is a hugely popular figure in English football, yet it appears his reputation as one of the good guys is currently masking over what has been a really poor campaign at Goodison Park.