Kosylo joined Halifax from Nantwich in 2016, after catching the eye playing against The Shaymen in the semi-finals of the FA Trophy.
Since then, he has produced some dazzling displays during three seasons at The Shay, scoring 31 goals in that time and helping the club earn promotion to the fifth tier in 2017.
Fylde lost in the National League play-off final to Salford last season, but recovered to beat Leyton Orient in the FA Trophy final.
