The Spanish youngster has enjoyed two stints at Goodison Park, and he has become a fans’ favourite during both spells, with his direct style catching the eye.
And Martinez believes that Deulofeu is loving playing at a club where he is able to play alongside some other exciting, young prospects.
“We have seen that here at Everton, a young man with incredible talent who has always been committed to being the best he can be,” Martinez said.
“But he also works to be essential to the team and he works as hard as he can to give what the team requires.
“He is really enjoying being on the football pitch and here he is developing relationships around him with Romelu Lukaku, Ross Barkley and Seamus Coleman. He loves being on the football pitch.”
Deulofeu had to bide his time for chances this season, but since being brought into Everton’s team, he has excelled.
The former Barcelona man has established his place in the Toffees’ starting line-up recently, and his performances have been highly impressive.
Deulofeu has laid on chances aplenty for the likes of Romelu Lukaku, Arouna Kone and Ross Barkley, while he has also chipped in with two goals himself.
Deulofeu will hope to continue impressing for Martinez’s side in the coming weeks, with Everton’s next match coming against Aston Villa.