Constantine said the Myanmar side have been together for some time and the support from crowd will give them the advantage. Moreover, Myanmar had beaten India 1-0 when the two teams met last.
"Myanmar are definitely the favourites. Playing at home is always an advantage for any team. They have been together for some time and the familiarity with each other is so much beneficial when you take the field. They certainly have the advantage," Constantine said two days ahead of the crucial match.
Asked about the perception of Myanmar being the bogey team for India, he said, "History will show that the same players are not always playing. The situations are always different and both teams would be playing after a long gap. I feel the circumstances are always different.
"But at the same time, I cannot deny history; in fact, nobody can. But we can't bring it back. Yesterday will always stay yesterday and at the same time, today is an another day.
Prior to the international friendly against Cambodia on March 22 which India won 3-2, Constantine had said that some of his players had niggles.
Asked about that, he said, "Considering the last 18 months, we are in a good place at the moment. Nothing is too serious and the players are ready.