Those hoping that Balotelli would fill the void left by the departure of Luis Suarez might want to adjust their expectations, says the Argentina legend.
Crespo, who played for Chelsea and both Milan sides, claims that Liverpool's new striker won't get near the scoring levels that were achieved by the talismanic Suarez.
Since getting his Milan career off to a flying start in the second half of the 2012/13 season, the Italian striker's form dropped somewhat. He scored 12 in 13 league games after leaving Manchester City in January 2013, but only managed 14 in 30 games last season.
The 24-year-old doesn't have the most spectacular Premier League record either; whilst at City he only managed 20 goals in 54 league appearances.
Crespo told La Gazzetta dell Sport that the new Liverpool man is far too inconsistent to make the same impact Suarez did.
He said: "People's judgments about [Balotelli] really come down to what expectations you have."
"If you think he's going to score 25 goals a season, then you've got it all wrong."
"He's never had that consistency. He can decide a game with one amazing moment, but you can't ask him to do it all the time."
Balotelli made his Liverpool debut in the 3-0 win over Tottenham Hotspurs; he looked lively and dangerous at times but failed to hit the net on his first league game.
Now that the Reds are without Daniel Sturridge for a few weeks, Brendan Rodgers will likely be looking to the former City man to spearhead their attack in his first Anfield outing against Aston Villa tomorrow.