The former Brazil national coach was full of praise for the midfielder after Chelsea's 3-0 win at the KC Stadium.
Scolari told BBC Radio Humberside: "I know Geovanni very well because he was my player at Cruzeiro in Brazil.
"He's my friend and for Hull City I think he is one of their best players. He's intelligent and works for the team and shoots for goal."
But the World Cup winning coach would not be drawn on whether his former charge could earn himself a recall to the national team.
"It's not my business," Scolari added.