Juventus coach Ciro Ferrara was delighted with Diego's performance in their defeat to AC Milan on Monday in the Trofeo Berlusconi.
"We leave San Siro with our heads held up high and having re-found an important player like Diego," said Ferrara.
"He has great quality with and without the ball. He is good at finding space and is also very powerful.
"He's not 100 per cent fit, but he did some classy things out there."