Lino DiCuollo, Major League Soccer’s senior vice president of competition and player relations, is leaving the league, according to multiple sources with knowledge of the decision.



DiCuollo joined MLS in 2005 and has been a central figure behind the scenes in the player department, which oversees the roster and budget guidelines, manages transfers and approves contracts, among other key responsibilities.



His last day at MLS will be Friday. It’s not known if or how the league will replace DiCuollo, who was the No. 2 in the player department under longtime MLS executive Todd Durbin.



Sources said DiCuollo has been exploring potential options outside of MLS headquarters since last year, when he was a candidate for front office positions with MLS teams, including the Montreal Impact. A source with knowledge of DiCuollo’s decision said he agreed to stay at MLS through the CBA negotiations and is now mulling multiple avenues within the...