The Fenerbahce boss has been lined up by the Portuguese federation, report CNN, who claim he will likely land the job this summer. It would see Mourinho reunite with Cristiano Ronaldo, who he managed for three seasons at Real Madrid between 2010-13.
Portugal's progression to the Nations League semi-finals in June is said not to have disrupted the talks with Mourinho. Martinez is set to take charge of that match - plus either the third-place play-off or final that follows - but the decision has supposedly been made to make the change afterwards.
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WHAT NEXT FOR MOURINHO?
For now, Mourinho is focusing on Fenerbahce's bid to win the Turkish Super Lig. They sit three points behind Galatasaray with seven matches remaining.