Insider Notebook: Chelsea's problem over Lampard replacement
Injuries and illness have limited the 20-year-old to just eight appearances in all competitions this season but he was handed a rare start in Saturday's 3-1 victory against Cheltenham Town in the FA Cup.
"We will see what happens at the end of the transfer window," Guardiola told reporters. "I don't think he will sign a new contract.
"I am pretty sure he is going to leave at the end of the season and now, in this transfer window, it will depend on the [other] clubs."