Di Matteo would not criticise Terry.
The Italian said: "He's fantastic leader of this group. He's the captain of our club. Everybody can make a mistake in life. We're just so happy that this group has managed to go to the final.
"It's an incredible achievement by this group of players. A lot of people had written us off and we showed again what kind of character these players have.
"We didn't expect to play with 10 men and we knew it was going to be tough. It was even more difficult than we expected.
"They're a great team, with some fantastic players. We just showed what we're made of."