Midfielder Orlandi missed Tuesday night's 2-1 defeat to Barnsley with a knee injury but the problem is not serious, while striker Ulloa is back in training after two months out with a foot injury.
"Other players are coming back from injury and I am very pleased to have them coming back now," Garcia said.
"Leo is starting to take part in training and we will see when he is ready to return.
"Andrea was not 100 per cent. He took a knock to his knee in training and so we preferred to put another player in the squad instead.
"We will now prepare for Leicester, one of the best teams in the league. We will go out to win and to play how we know that we can play."