The Spaniard officially started in his new role at Goodison Parkon Monday and has begun his assessment of his charges ahead of their return to training on Thursday.
| TRANSFER TALK
|22/1||Everton are 22/1 with Coral to finish in the top four next season
"They are players that I know really, really well," told the club's official website. "I worked with them really closely and they are players that are used to the Premier League and the British game.
"I think [Everton] need to bring in three or four new faces - one per unit, and make sure we get an extra option or dimension into the squad.
"We need to remember that we have a very strong team at the club, but in the same way we don’t want to close the window without feeling stronger than we were when the window opened."
As well as signing new players, Martinez faces the challenge of keeping key players Leighton Baines and Maroune Fellaini.
The left-back has reportedly been the target of a failed £12 million bid from Manchester United, while Goal exclusively revealed on June 22 that Arsenal have upped their contract offer for the Belgian after triggering his release clause.