VfL Wolfsburg have made Juventus Turin an improved offer of 20 million euros (25.3 million euros) for Brazilian playmaker Diego, news reports said on Wednesday.
Italian newspapers and television said that talks about a transfer to the 2009 German Bundesliga champions have been re-opened, DPA reported.
Wolfsburg general manager Dieter Hoeness declined to comment on the reports which also said that Diego has already agreed to terms with the Germans.
Diego, 25, did not fully meet Juve's expectations after joining them last year for 24.5 million euros after three seasons at Germany's Werder Bremen.
Transfer income for Diego could allow Juve to hire Udinese's Italy forward Antonio di Natale, while Wolfsburg could let Bosnian playmaker Zvjezdan Misimovic go to Schalke (or Galatasaray) if they get the 48-times capped Diego.