The American goalkeeper pulled up immediately after taking a goal kick right as the referee blew for half time in the home defeat to Stoke City on Boxing Day, and Martinez confirmed that the prognosis for the 34 year old did not make for good reading, considering Everton’s ever growing injury list.
“Tim will be out for between five and six weeks,” he said.
“It is an injury to his left calf. As a goalkeeper it’s really unusual to get an injury kicking a ball.”
The Spaniard also updated the press on a number of other current absentees, including Phil Jagielka, John Stones and James McCarthy.
“Phil Jagielka twisted his ankle against Stoke and John Stones got a strong knock to the same ankle we operated on earlier in the season,” Martinez explained.
“We’ll need to assess them on a daily basis. It’s really difficult to predict how long they will be out.
“James McCarthy will be assessed for Thursday. It’s too early to say at the moment. It was more of a precaution [that he was withdrawn] against Newcastle rather than an injury – he couldn’t continue, but we’ll have to be careful that he gets back to being fully fit before he faces the demands of a full 90-minute game.
“With Tony Hibbert, it’s a question of a couple of weeks. He’s feeling a lot stronger and a lot better.
“We have a real worry with Leon Osman who split a tendon in his foot against West Ham. We tried to get through it but we need to find a solution. He’ll be out for a while.
“Darron Gibson is still coming back from his knee soreness. He’ll be out for Thursday’s game and Steven Pienaar is a couple of weeks away from being fully match fit with his knee trouble.”