The Everton manager wants the midfielder to remain at the club, a far cry from many years back.
McCarthy formed an effective partnership at the heart of the Everton midfield with Gareth Barry, and the 23-year-old has recently spoken of his delight that his more experienced partner has made his loan move from Manchester City permanent.
Martinez is quoted in the Liverpool Echo, saying: “We will always be looking at rewarding players as they do well and James, clearly, is one of those.
“We always want to keep our young players important at the club and keep rewarding them. That will never change. That goes along with players who change their roles in the squad. We talk a lot about our young players and rightly so, but sometimes we forget that without that solid base of experienced lads behind them you don’t go anywhere."
In many ways, these comments not only indicate that Everton are keen on keeping hold of one of their best players for the long-term, but a bit of a culture change at the club.
In the past they have sold the likes of Jack Rodwell when he was showing signs of promise and rated very highly, whilst they couldn't resist the offer put on the table for Wayne Rooney 10 years ago. But since Martinez arrived at the club they have managed to keep hold of Leighton Baines despite Manchester United's interest, and tied Ross Barkley down to a long-term deal.
It also looks as though Everton are slowly eroding any notion that was held of them operating a 'selling club'.
How important is McCarthy to Everton?