The striker struck in the Europa League win against Shakhtar Donetsk and is set to feature against Parma today.
“Some players are more tired than others, so there will be some rotation, but we don't have that many options either," said Fonseca.
“Victories bring confidence, being captain brings confidence. It's a bit of everything that combines to help. I will give you one clue, Pedro will play tomorrow. He was decisive on Thursday with the assist for Pellegrini's goal and had a very good game, so I don't know why people say he is struggling.
“Stephan El Shaarawy is a different player to the others in the squad, which is why we brought him to Roma. I realise there is pressure on him, but we must give him time to work and integrate after a year in which he hasn't played very much football."