On 1 July 2016, Zefi joined newly promoted Albanian Superliga side Korabi Peshkopi by penning a one-year contract for an undisclosed fee.[2] He signed along with 12 other players, five of them being his teammates at Laçi.[2] He was given squad number 22, and made his competitive debut on 7 September in the opening 2016–17 Albanian Superliga week against Laçi, appearing in the last 13 minutes of an eventual goalless draw.[3] On 12 February of the following year, during the matchday 21 against Luftëtari Gjirokastër, Zefi was sent-off in the 61st minute for headbutting a player of Luftëtari, as the match finished with a 2–0 defeat for Zefi's side.[4] This led the Disciplinary Committee to ban him for the following five league matches.[5]
Kamza
In July 2017, Zefi signed with fellow promoted top flight side Kamza.[6] He played his first match for his new side on 9 September in the opening week of 2017–18 Albanian Superliga against Kukësi, playing 64 minutes in a 1–0 loss.[7] In his first season at Kamza, Zefi made 17 league appearances as Kamza retained their top flight spot by winning in the final matchday against Partizani Tirana.[8] He left the club in July 2018.[9]
Bylis Ballsh
In August 2018, Zefi left Albanian Superliga after eight seasons and joined Albanian First Division side Bylis Ballsh.[10]
^Sotir Kora (12 February 2017). "Luftëtari, në vendin e 4-t, mposht Korabin" [Luftëtari, in the 4th place, defeats Korabi] (in Albanian). Super Sport Albania. Retrieved 17 February 2017.