Brazilian starlet Piazon was in line to start the fourth-round tie, which takes place amid the backdrop of the Mark Clattenburg affair. Chelsea boss Roberto Di Matteo is set to make several changes for the game, including possibly resting John Obi Mikel and Juan Mata. That may occur regardless of the allegations referee Clattenburg used "inappropriate language" towards them during Sunday's explosive Mikel, Mata, Oscar and Eden Hazard could all be given the night off, making way for Oriol Romeu, Victor Moses, Marko Marin and Piazon. Eighteen-year-old Piazon, who has recovered from a hamstring strain, made his first-team debut in last month's 6-0 third-round thrashing of Wolves. He told Chelsea TV:
"I was just a bit upset after the game because I didn't score but I think it was good, my first official game for Chelsea, so I was happy anyway.
"I was feeling okay and the level was a bit harder, of course. The players are bigger, stronger.
"This part, I found a bit difficult, but it wasn't a big problem.
"I think playing a better level will make you think in a better way."
Source: team_talk
