It's the first of three friendlies for Portugal this weekend as the World Cup is fast approaching.
The final 23 have already been named for Brazil, and now is the time for Paulo Bento to finalise his starting XI.
First of all, Bento can test out a number of tactical variations to equip his team for the rigours and demands of tournament football.
This is the moment to see what works and what doesn't, while reaffirming things that have worked previously.
When the Portuguese face Germany on their opening-group fixture, they will need to be physically and mentally ready.
Here are five things he should test out against Greece: