Ibrahimnovic is now in the 4th season with me, averaging 30+ goals per season (Bearing in mind that I never have a player play 2 consecutive matches, so for me he's usually been averaging 1 goal per match).
I'll get you a screenshot tonight, but so far this season (2012/2013), he's scored 14 goals in 12 matches.
I doubt that any player scores each and every single match, he'll average a goal a match, but will do it through not scoring for a match, then scoring 2 or 3 goals the next, however, the thing is to get the average match rating for a player, not just his goal-scoring, for example, I have Messi as the top performer, he's averaging 7.8, but he's not the team's top scorer or the one with the highest assist count, he's simply quite influential, putting his mark on each and every team move.