Montella insisted Suso was 'never for sale' after the Spaniard scored in Milan's 2-1 win over Cagliari.
“Suso is part of the Milan project, he is very well thought of by the coaching staff," Montella began.
“We never thought of putting him up for sale. He is a decisive player."
He added: “We deserved the win, we went ahead and then we maybe subconsciously took our foot off the gas."