The coach admitted his Belgium side missed Kevin De Bruyne and Eden Hazard as they were held to a 1-1 draw by a "physical" side on Saturday
Belgium coach Roberto Martinez accused Greece of playing "an ugly, physical game" after his side were held to a 1-1 draw in their World Cup qualifying match at Stade Roi Baudouin.
The Red Devils went into the game as favourites, having won all four of their previous Group H matches to go top of the table, but Kostas Mitroglou scored in the opening minute of the second half to give Greece the lead.