The Toffees captain has not featured since February after suffering a hamstring injury but is slowly nearing a return to first-team action.
“Phil is very much fully fit from a medical point of view,” said Martinez. “He’s not too far away and he’s been working really well this week. But, at the moment, we have the same squad as we had at Sunderland.
He’s our club captain and we need him on the pitch as soon as he can be.
“Phil is our club captain and as soon as he’s ready he’ll go straight back into the team. We need him immensely. He’s been very much influential, even when he hasn’t been on the pitch.
“He’s always had a real presence in the dressing room and had plenty of wise words of advice for the young players in the squad. He’s our club captain and we need him on the pitch as soon as he can be.”
The Everton boss, whose side are fourth in the table, also gave updates on Steven Pienaar and Darron Gibson as the pair recover from knee injuries.
“Steven is going to take a little bit of time to get back but I expect him to be back very soon, certainly before the season ends,” he said.
“Darron is great. I think his knee is stronger than before the injury, which is always a good sign. It’s more about the chain of muscles around the knee and making sure he can cope with football movements. We expect him to join the group next week which is a phenomenal achievement.
“We never expected him to be fully fit before the season ends, so it’s great credit to him and the medical staff.”
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