Chelsea assistant coach Zsolt Low praised Kepa Arrizabalaga for his performance in the Club World Cup semi-final against Al-Hilal.
The Spaniard pulled off a number of fine saves to help Chelsea secure a 1-0 win and book a place with Palmeiras in the final.
Asked what he thought about Kepa's performance, Low said: "We're very important.
"In the cup he did a big performance to save the penalty. Today when we needed him he was there and made one big shape.
"He's in very good shape. He plays and trains well. We're lucky to have him. In the next days we have to decide who plays the final.
"We're waiting for Thomas' opinion and the goalkeeping coaches before we take the decision for the final."