Zlatan Ibrahimovic ended his one-year goal drought as Paris Saint-Germain continued their dominance in the French Ligue-1.
Carlos Tevez was overlooked for the 2014 World Cup in Brazil. The final 23-man squad will be named on June 1.
Javier Pastore provided the difference after teammate Sergio Aguero, a forward for Manchester City, scored in the eighth minute and Miller Bolanos equalized in the 24th minute.
Milan had hoped Balotelli would return from a three-game league ban against Udinese on Saturday.
Italian football's long-standing problem reappeared last weekend when visiting Milan fans reportedly targeted two of Juventus's black players, Frenchman Paul Pogba and Ghanaian Kwadwo Asamoah, with racist chanting.
With an eye on PSG's midweek Champions League tie against Benfica, Laurent Blanc chose to rotate his squad as he made seven changes to the team that beat Valenciennes 1-0 on Wednesday.
He becomes Tottenham's fifth signing of the transfer window. Andre Villas-Boas' side begins its Premier League season on Sunday, away to city rival Crystal Palace.
Barca's celebration of the goal said it all as a screaming Pedro was engulfed by his teammates, it was a reaction of relief as much as joy. Even in the final stages this was a distinctly un-Barcelona like display.
PSG coach Carlo Ancelotti praised his players for what he termed "a very good game" and suggested they had left a favourable mark on the competition.
While Barcelona maintain the upper hand in the UEFA Champions League quarterfinal tie thanks to their two away goals, it was not a good night for the Spanish league leaders, who lost Lionel Messi to a hamstring injury at the half-time interval.