Knowing the racism reality of Italy, I would certainly suspect it (why him specifically of all the douches, and why in a games we arent even facing him?? What motivates them to do that?), but wouldnt outright think it is on that alone, no.
But its bit silly tunnel vision to disregard relevant context like how he is racially targeted in and outside the pitch in Italy, wether its being called negro di merda you arent italian by same people wishing him to die in the chant (and when they are doing it the same time they are chanting for him to die, how am I supposed to disregard the possibility of being racially motivated), or there are bananas thrown at him at night clubs (promoting event for Azzurri olympics with Giovinco, on a stage, Romanisti throw bananas at him). Figuring that the same attention might be motivating this latest chant that partly or otherwise, its hardly unreasonable. But you are welcome to assume I am biased if you want.
And seriously, racist part aside, I can echo what Seven said several times in this thread (is he a biased african for you when he has been saying word for word the exact thing?), but also said it in few posts that there are certain things that DONT belong in footie, wishing death on a player regardless what a douche he is fucking retarded, said it regardless several times in this thread for you to get it, regardless of players race/ethnicity (not just this stuff, but lots of other, like mocking the death of someones just died father/mother, totally insulting someones sick child and so on with the numerous vile examples that footie is filled with). And whoever the player its, dealing with non racially related ugly behaviour is good. Not to mention they effect our club with bad reputation (yes we need more of that), fines, stadiums bans, most importantly they shame us, period.