The Belgian national soccer team took to the pitch at their training centre of Tubize outside Brussels on Friday (March 24) ahead of the 'Red Devils' line-up against Greece in Saturday's World Cup qualifier. <br /> <br />Earlier in the day, coach Roberto Martinez expressed 'concern' about Manchester City Midfielder Kevin De Bruyne's health, casting doubt that he will take part in the game on Saturday (March 25). <br /> <br />Martinez said De Bruyne could be unfit for the match following pain in his groin at the end of his most recent training session. <br /> <br />If the loss of De Bruyne remains to be confirmed, martinez confirmed that PSG Defender Thomas Meunier will be unable to play, and is returning to his club ground, Paris Saint-Germain. <br /> <br />After four matches in Europe's Group H Belgium are top with four wins and Greece second with three, having drawn 1-1 with Bosnia and Herzegovina. <br /> <br />The Spaniard warned that Greece would be a formidable opponent, and said that the home fans' support on the day will be essential. <br /> <br />Forward Romelu Lukaku said he was sure a victory against Greece was possible despite the absence of De Bruyne and Meunier. <br /> <br />The 2018 World Cup will be held across Russia in June and July 2018.