"Leighton is not far off at all. We had a very good two weeks work. I'd say two weeks more," Martinez said during his pre-match news conference ahead of Saturday's visit of Manchester United in the Premier League.
With defenders John Stones and Seamus Coleman also fit, Martinez is optimistic that his side can beat United at Goodison Park for the fourth time in a row -- a feat they have never achieved in the Premier League.
"From a medical point of view they (Stones and Coleman) are fit but from a football point of view we need to make a decision over the next 48 hours," Martinez said.
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"We respect this Manchester United side. When they hit top spot a few weeks ago it was a statement. But we want to be as good as we can."
Midfielder Ross Barkley, who has been in fine form this season, also drew praise from his manager.
"In Ross's case I've been pleased with his assists, final movement and pulling people out of postion. That understanding has gone to a different level.
"It's not just scoring goals, it's using his presence in the final third a bit more. There's been a focus on him being a bit more aware of what he can do."
(Reporting by Shravanth Vijayakumar in Bengaluru; Editing by Nick Said)
