Italian Serie A side Cagliari have appointed former Middlesbrough defender Gianluca Festa as their new head coach
Zdenak Zeman has quit as coach of Cagliari just weeks into his second stint in charge of the Serie A strugglers.
Neither side could find the net in the Milan derby, while Roma missed the chance to go second.
Napoli are within five points of Roma and a Champions League place after a comfortable 3-0 Serie A victory at Cagliari.
Genoa left Cagliari even deeper in relegation danger with a 2-0 win at the Stadio Luigi Ferraris on Saturday.
Lazio kept the heat on second-place Roma by clinching a seventh consecutive Serie A success, 3-1 at 10-man Cagliari.
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