Slavisa Jokanovic’s side head into Saturday’s home game against Preston seventh in the second tier, five points off Sheffield Wednesday but with a game in hand.
Kalas and Piazon have been two of Fulham’s most important contributors throughout an impressive season at Craven Cottage, the latter providing six goals in 25 games whilst the Czech defender has been a regular in a solid defence.
“I just think they have made the squad so strong,” said Fulham captain Cairney, who was named EFL Player of the Year at the London Football Awards on Thursday. “Kalas has been brilliant, especially at the start of the season.
“Lucas has just got a bad injury at the weekend but he is brilliant on the ball and has done well.
“We pass out from the back. It is risky football, if you make an error, don’t worry. You just have to keep on going and I think that’s why as games have gotten on we have got more and more confident and we are showing that at the minute.”
Piazon faces a lengthy layoff after suffering a broken jaw in Fulham’s last match, a draw at Cardiff.