Victor Piturca has resigned as Romania coach in order to take charge at Saudi Arabian club Al Ittihad.
Romania stayed unbeaten in their European qualifying campaign with a 2-0 victory over Finland.
Portugal slumped to an embarrassing 1-0 defeat at home to Albania in their opening Euro 2016 qualifier in Lisbon.
UEFA have approved the launch of a Nations League from 2018, with the new tournament to be played every second year.
Argentina's stars failed to find a way through a resilient Romania outfit in a surprising goalless draw in Bucharest.
Argentina striker Gonzalo Higuain believes Wednesday's friendly against Romania will provide a good test.
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