 Complete the following phrase:  Following Francesco Guidolins return to Palermo in the 200607 season, Brienza failed to find a stable place in the regular lineup, being featured mostly as a substitute, playing only 22 league and five UEFA Cup matches. On the 37th matchday, after a 21 home win to Siena, Guidolin declared his choice to use Brienza mostly as a reserve as one of his main mistakes in a troubled season which ended in a fifth place. Brienza, who originally declared his intention to leave Palermo to find more space in the lineup, remained for the 