Fiorentina coach Cesare Prandelli wants fans to be patient with their two late January signings.
Adem Ljajic has arrived from Partizan Belgrade, while striker Keirrison joins on-loan from Barcelona.
Prandelli said: "The January arrivals are settling in well. We need a great deal of patience with Adem Ljajic, as he has immense quality, but we cannot put too much responsibility on his shoulders.
"It's too early to judge on Keirrison, but he is your classic goal poacher."