Martinez said: “Every case is an individual case. Ross Barkley, for example, is an Evertonian. He can get at Everton anything he could get at another club. And it is his club.
“Everyone else, we don’t know what their aims are and what they want to do, but we will never lose a player now because we are unable to give him what he deserves, put it that way.”
Martinez faces much higher expectations under the new owner, but insists he has no fears for his job.
He said: “I’m the manager and I know it’s a results business and I’m going to be judged on my job. That doesn’t change.
“I’m not thinking of myself, I’m thinking of the club and this investment is exactly what we need.”
Midfielder Muhamed Besic has signed a new five-and-a-half-year deal that will keep the Bosnian star at Goodison Park until the summer of 2021.