Ku qor sii wadida cutubkan - Wuxuu ku dhashay magaalada Pisa, Galli wuxuu xirfaddiisa ka bilaabay kooxda dhallinyarada ee magaaladiisa isagoo ahaa ciyaaryahan khadka dhexe ah ka hor inta uusan u wareegin doorka goolhayaha. Wuxuu xirfaddiisa xirfadeed ka bilaabay ACF Fiorentina sanadkii 1977, halkaas oo uu ka ciyaaray sagaal xilli oo Serie A ah. Sanadkii 1986-87
, wuxuu ku biiray kooxda horyaalka ee AC Milan, isagoo ahaa xulashada koowaad saddex ka mid ah afartii sano ee uu joogay, wuxuuna isu caddeeyay inuu yahay mid ka mid ah goolhayaha ugu fiican Talyaaniga, isagoo ku guuleystay horyaalka Serie A iyo Supercoppa Italiana xilli ciyaareedkiisii ugu horreeyay. Waxa uu sidoo kale bilaabay labada koox ee ku soo laabtay gadaal gadaal guushii Koobka Yurub, 1989 iyo 1990, sidoo kale wuxuu ku guuleystay Supercups Yurub oo isku xigta 1989 iyo 1990, iyo Intercontinental Cups 1989. Waxa uu sidoo kale gaaray finalka 1989-1990 Coppa Italia ee Milan. Xilli ciyaareedkiisii ugu dambeeyay ee uu la qaatay kooxda, waxaa inta badan la beddelay oo uu la kulmay tartan ka dhan ah booska bilowga ah ee ka yimid Andrea Pazzagli, kaas oo maareeyaha Arrigo Sacchi uu inta badan ka ciyaari jiray inta lagu guda jiro ciyaaraha horyaalka, halka Galli uu ka ciyaaray ciyaaraha Yurub.