"At the moment we are still talking with Monaco," he told evertonfc.com.
"With Lacina, it is a three-way conversation and it will go a bit further down the line before we take a final decision.
"But we always wanted Lacina to be with us and to play his football with us, and that hasn't changed at all."
Martinez is also keen on Romelu Lukaku, who may be available on a permanent deal if Chelsea decide to cash in on the Belgium international.
"Romelu had an incredible season. He is a young man who matured immensely," added the Spaniard.
"We know the potential of Rom and Chelsea have been very good with the player and we have been really close with our relationship.
"We need to find out where we are and there is nothing more to comment.
"Every time we spoke about Rom's situation it was very clear that he wanted to go to the World Cup and then make a decision.
"Obviously it is not going to take too long from now on."
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