▁for ▁top ▁division ▁clubs ▁in ▁South ▁America , ▁Europe ▁and ▁North ▁America . ▁ ▁Club ▁career ▁Pi atti ▁has ▁played ▁professional ▁football ▁in ▁Europe ▁with ▁Saint - Ét ienne ▁and ▁L ec ce . ▁In ▁his ▁native ▁Argentina , ▁he ▁has ▁played ▁for ▁Ch ac ar ita ▁Juni ors , ▁G im nas ia ▁LP , ▁and ▁Independ iente . ▁ ▁On ▁ 1 7 ▁August ▁ 2 0 1 2 ▁Pi atti ▁signed ▁for ▁the ▁Argent ine ▁club ▁San ▁Lorenzo ▁de ▁Al mag ro ▁for ▁a ▁reported ▁fee ▁of ▁€ 1   mill ion . ▁He ▁deb uted ▁against ▁Col on ▁de ▁Santa ▁Fe ▁in ▁the ▁sixth ▁match ▁of ▁Tor neo ▁In icial ▁ 2 0 1 2 , ▁Ig na cio ▁was ▁the ▁player ▁of ▁the ▁match . ▁ ▁On ▁ 2 ▁July ▁ 2 0 1 4 , ▁Pi atti ▁signed ▁a ▁transfer ▁agreement ▁with ▁Canadian ▁club ▁Montreal ▁Imp act ▁of ▁Major ▁League ▁Soccer . ▁However , ▁he ▁remained ▁with ▁San ▁Lorenzo ▁until ▁the ▁team ▁completed ▁their ▁Copa ▁Libert adores ▁campaign . ▁He ▁reported ▁to ▁Montreal ▁on ▁ 1 3 ▁August ▁ 2 0 1 4 , ▁and ▁deb uted ▁for ▁Montreal ▁against ▁the ▁Chicago ▁Fire ▁on ▁ 1 6 ▁August . ▁When ▁Pi atti ▁joined ▁the ▁Imp act , ▁he ▁was ▁an ▁instant aneous ▁success , ▁scoring ▁ 4 ▁goals ▁in ▁ 6 ▁games . ▁He ▁started ▁all ▁six ▁games ▁in ▁the ▁ 2 0 1 4 – 1 5 ▁CON C AC AF ▁Champions ▁League ▁Championship ▁Stage ▁and