That season non-EU quota of Italy was abolished and Como signed William, Douglas Pinto de Castro and Marcelo Luis Alcantara from Santa Catarina state.
They followed the footsteps of Amauri, leaving for Swiss Nationalliga B club Bellinzona in a one-year loan.
[5] After Enrico Preziosi bought Genoa and transferred numbers of players from Como to Genoa in un-economical price (which Preziosi was banned from football for Daniele Gregori, Carlo Gervasoni and Saša Bjelanović's transfer in 2007[6][7]), the team was lack of financial source (no more re-capitalization) and was in the market, William, who had a low goal scoring record in Italy at that time, was offloaded to Apulia club Martina, his third club in Italian third division.
In January 2009 he moved back to Apulia, southern Italy for the third division group B side Taranto, in 3-year contract (2+1⁄2-year?).
[12] On 31 August 2009 he left for Lega Pro Seconda Divisione club Brindisi, also in Apulia region.
[15] He scored 2 goals in 4 appearances in 2011–12 UEFA Champions League qualifying rounds, losing to FK Ekranas.He signed a contract extension to the local champions Valletta FC, And William ending winning best midfielder, best foreigner, Best overall and was named in the BOV premier league Best XI.