Zeman made allegations 14 years ago during his first spell at Roma which sparked a doping investigation into Juventus.
The 65-year-old has remained critical of Juventus since, and in particular coach
Conte's interim replacement
Juve's run of four straight wins drew to a halt in a goalless draw against Fiorentina in midweek, and Carrera's main decision will be whether to replace the ineffective
"The tiredness is ready to pass. It will be another intense encounter on Saturday, but we know how important it is, and we are determined to win."
Juve's slip allowed Napoli to draw level on 13 points at the top after its emphatic 3-0 win over Lazio in
Napoli faces a tough task at third-placed Sampdoria, which has shrugged off a one-point deduction and grabbed a point at Roma in midweek despite the early sending-off of
Fourth-placed Inter Milan will be without
Sneijder pulled a muscle in his side's 2-0 midweek win at Chievo and could be out for at least two weeks.
City rival Milan is in Saturday afternoon (Sunday morning AEST) action as it travels to Parma, hoping to build on a 2-0 midweek win over Cagliari in which 19-year-old
After a bright start to the season, Lazio will be desperate to shrug off two successive Serie A defeats, including its thumping midweek loss at Napoli, when it faces bottom club Siena.
Catania will look to build on its midweek win over Atalanta as it travels to Bologna, while Atlanta faces a Torino side which has failed to win in three after a midweek home draw with Udinese.
Udinese is at home to Genoa while the league's two remaining winless sides both have chances at home, with Cagliari facing Pescara and Palermo up against more fellow strugglers in the shape of Chievo.
Napoli president Aurelio De Laurentiis insists there is 'nothing official yet' regarding its hunt for a coach amid widespread speculation Rafael Benitez will be the new man in the hotseat.