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Zola spent seven years at Stamford Bridge as a player, scoring 80 goals and helping the club win two FA Cups, one UEFA Cup Winners' Cup, a UEFA Super Cup and one League Cup.
Conte won the Premier League with Chelsea in his first season after joining in 2016. However, his future at Stamford Bridge remains uncertain as they finished fifth in the last campaign and failed to qualify for the Champions League.
Having taken two points from their last three games, Juventus are on 77 points, seven ahead of Atalanta, who thumped Brescia 6-2 on Tuesday, with five matches remaining.
Juventus, with 80 points, are eight clear of Inter Milan with four games each to play followed by Atalanta on 71 and Lazio fourth on 69.
Ronaldo broke the deadlock in first-half stoppage time with his 31st league goal of the season and Federico Bernardeschi added the second as Juve beat Sampdoria 2-0.
The decision came hours after the Turin club sacked coach Maurizio Sarri following their Champions League last-16 exit to Olympique Lyonnais on away goals on Friday..
Cristiano Ronaldo scored a brace, including an unstoppable long-range goal, to give Juventus a 2-1 win over Olympique Lyonnais but it was not enough as the French side reached the quarterfinals on away goals.
The sacking follows the team's elimination from the Champions League in the round of 16 on Friday.
Sarri was at Chelsea for just one season, where he won the Europa League - the first major trophy of his career.
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