Footage of the match showed the shaven-headed Favarin headbutting Gaetano Mancino, assistant coach of rivals Alessandria, during a brawl at the end of a 2-2 draw between their teams in Italy's third division on Sunday.
Mancino was caught off-balance and knocked to the ground by the blow.
Serie C's disciplinary tribunal said in a statement that Favarin made "blasphemous remarks" during the match and "invited his own player to 'break the legs' of an opponent."
He also "began a slanging match with a member of the opposing team's staff at the peak of which he hit the latter with a violent headbutt, making him fall to the ground ".
Mancino, meanwhile, was given a two-match ban for "offensive and provocative behaviour towards the coach of the rival team during the match."
