If the Old Lady lose the gap up to Inter could become nine points.
“The game against Milan will prove whether we are in or out,” Blanc told Sportmediaset.
“Whoever loses will fall behind further because Inter are likely to win their easy game.
“There is great respect between the two teams and I hope the game will be good with nice football.
“Millions of people will be watching it around the world and I hope Italy can show the rest of the world our game.”