Prenga begun his managerial career with the under-19 side of NK Hrvatski Dragovoljac. In the 2016–17 season, he led NK Lokomotiva U19 to their first championship after a goalless draw versus Dinamo Zagreb U19 in May 2017.
NK Lučko On 12 June 2017, after two years without a senior club, Prenga joined
Lučko for the
2017–18 season. His spell wasn't successful, as he was in charge for only four matches before being sacked in September.
Laçi On 6 June 2018, Prenga signed a one-year contract with
Laçi of
Albanian Superliga. His first game in charge was the first leg of
2018–19 UEFA Europa League first qualifying round against
Anorthosis Famagusta. The team lost 2–1 at
Antonis Papadopoulos Stadium despite scoring first. In the second leg, Prenga won his first match as Laçi manager thanks to a late winner of
Myrto Uzuni for a 1–0 win, which was enough to clinch the qualification by the away-goal rule. ==Personal life==