Venezia In 2007, he became the
Venezia youth team coach, also getting involved in obtaining a coaching licence. On 11 March 2008, he was unveiled as new Venezia head coach, replacing
Salvo D'Adderio. He was sacked a few months later, on 11 November, due to poor results. He was recalled in February 2009, with Venezia placed in the league bottom, and managed to bring his club out of the relegation zone.
Mantova This attracted interest from
Serie B club
Mantova, who appointed him as new boss for the 2009–10 season. Mantova finished third bottom of Serie B and were relegated. However, due to financial difficulties, their entry to
Lega Pro Prima Divisione was rejected and the club folded.
Grosseto On 13 January 2011, Serena was appointed the manager's job at
Serie B side,
Grosseto, until the end of the
2010–11 season.
Spezia On 5 October 2011, he became the new coach of
Spezia in
Lega Pro Prima Divisione group A, in place of the sacked
Elio Gustinetti, but on 4 January 2013 he was sacked.
Padova On 2 February 2014, Serena became the new coach of
Padova in
Serie B, in place of the sacked
Bortolo Mutti.
Vicenza On 27 December 2018, he was appointed head coach of
Vicenza in
Serie C. He resigned on 24 February 2019.
Legnago On 27 December 2021, Serena returned into management after almost three years without a club, as the new head coach of Serie C club
Legnago. He was dismissed on 28 March 2022 following a string of negative results. ==Personal life==