Career
Youth
Herghelegiu started his career as a youth at LPS Iași. He then moved to the youth team of local club Politehnica Iași
CSMS Iaşi
After the dissolution of Politehnica Iași he joined newly formed CSMS Iași in Liga World War II At the end of his second season at the team, CSMS Iași gained promotion to Liga I with the help of Herghelegiu, who scored 7 goals from 26 appearances. On August 17, Herghelegiu scored his first Liga I goal against CFR Cluj to aid his team to a 2-2 draw.
Universitatea Craiova
In the summer of 2014, after he finished his contract with Politehnica, Herghelegiu and teammate Adrian Avrămia, were signed by CS Universitatea Craiova.