Juventus's big spending failed to pay dividends again on Sunday when their defensive weaknesses were exposed in an exciting 3-3 home draw with coach Luigi Del Neri's former side Sampdoria.
Former midfielder Antonio Conte will be named as the new Juventus coach on Tuesday, club president Andrea Agnelli told reporters.
Surprise pacesetters Sampdoria failed to rejoin Inter Milan at the top of Serie A after being denied a late penalty shout in a 1-1 draw at Lazio on Sunday.
The Spaniard replaced Luigi Del Neri, daily sports newspaper O Jogo reported.
The new Porto coach was fired following his repeated absences from the club, news reports said.
"Yes, they have contacted my agent and there is a possibility of being coach of Porto," Italy's Chievo Verona coach Luigi Del Neri said.