Juventus GM Beppe Marotta admits they may buy a new defender in January.

Juve have been linked with Internacional's Juan Jesus and Zent St Petersburg veteran Bruno Alves this season.

"A new defender? The club has made a significant investment in the summer. I do not imagine more investment, but if there are opportunities - like Andrea Barzagli last year - we will," said Marotta.

"Milos Krasic? Form dips frequently recur in some players. At this time he is not demonstrating the value he has, but he's a great player and he'll prove it."