Rubuta ci gaba don wannan sakin layi - An haifi Collovati a Teor, a lardin Udine. An kawo shi ta hanyar makarantar matasa ta A.C. Milan, ya fara wasa a Serie A tare da "rossoneri" a cikin kakar 1976-77, wanda ya buga sau goma sha ɗaya har ma ya lashe Coppa Italia. A kakar wasa ta gaba ya taka leda a kai a kai (25 bayyanuwa, 1 burin) amma lokacinsa na ƙarshe ya zo a lokacin kakar wasa ta 1978-79 wanda, godiya ga bayyanarsa 27, ya lashe "scudetto". Bayan kakar wasa ta 1979/80.
, Milan ta sauka zuwa Serie B saboda shigar da su cikin abin kunya na caca na Totonero. Ba kamar sauran 'yan wasa ba, Collovati ya ci gaba da kasancewa tare da Milan a Serie B kuma ya buga wasanni 36 inda ya ci kwallaye biyu, ya lashe kofin gasar a wannan kakar, kuma ya taimaka wa kulob din ya sake komawa Serie A a kakar wasa ta gaba. Komawa cikin Serie A a kakar wasa mai zuwa, Milan ta lashe Kofin Mitropa tare da Collovati a matsayin kyaftin din kungiyar: duk da haka Milan ta sake komawa Serie B, amma a wannan karon saboda ayyukansu a filin wasa. A wannan lokacin, Collovati (wanda a halin yanzu aka kira shi zuwa "Nazionale") ya yanke shawarar shiga abokan hamayyar gida Inter Milan.