The midfielder enjoyed a fine afternoon in Saturday's 3-0 win over Stoke City.
The midfielder was signed on a free transfer from Manchester United in the summer, after an impressive second half of the campaign while on loan at Aston Villa.
He has so far looked a decent acquisition as well, having battled back from an injury earlier in the campaign to put in a series of impressive and assured displays for the Toffees.
One such display was in the 3-0 win over Stoke City on Saturday, as he won a penalty and set up Seamus Coleman’s headed second, and Martinez says he does not believe there is a better English player in the league.
“I think you do not have a better English player. Technically, he is as good as you get,” the Telegraph reports him saying.
“The way he executes, how he reads the game, for me he is one of the most sensational you are going to see in Premier League history.”
“I wouldn’t sell him for any money in the current market. I want to see him go from strength to strength because I know there is so much more to come.”
While Cleverley has done well, many would suggest that it is another Everton man, midfielder Ross Barkley, who is deserving of such praise.
The young star has had a fine season so far, with a series of impressive performances having seen him bounce back from a disappointing campaign last year.
Those displays have seen him become one of the jewels in Everton’s crown once more, with a place in England’s Euro 2016 squad looking a certainty and many would certainly have him ahead of Cleverley at present.