"Sampdoria announce that the relationship with coach Luigi Del Neri will not continue in the 2010/11 season," a club statement said.
Media reports quoted Samp owner Riccardo Garrone as saying 59-year-old Del Neri, famous for his trademark glasses and prominent chin, was almost certainly going to Juve.
In what should have been a joyous week for Samp after finishing fourth in the league and securing only their second berth in Europe's top competition, the Genoa club now have to find a new coach and sporting director.
"With Juventus there is a verbal agreement," Marotta told Italian radio. "My passage to Juve has not been made official, it's up to the Juve directors to do that, but I will limit myself to say that Juve must return to being competitive."
The twice European champions are Italy's most successful domestic club and the best-supported, hence they still have immense pulling power despite enduring a miserable campaign.
Media reports had linked Juve with Liverpool's Rafael Benitez ever since Ciro Ferrara was sacked in January but former AS Roma, Porto and Atalanta coach Del Neri became the bookmakers' favourite last week.
