United will open up the tour by facing a Slovenian XI on Wednesday July 10 at the Fazanerija City Stadium and will end the trip with Ferencvaros at the same venue on Tuesday July 16.
Ferencvaros were the Whites opponents in 1968 when the club won their first European trophy, the Inter-Cities Fairs Cup.
Leeds won the two-legged affair 1-0 on aggregate, Mick Jones scoring at Elland Road before a 0-0 draw in Hungary.
More recently, the Hungarian side were managed by former United striker Bobby Davison.
Pre-season matches were already confirmed against Farsley AFC, FC Domzale (Slovenia), Walsall, Stevenage and FC Nurnberg.Full Pre-Season Schedule for 2013 Sat July 6: Farsley AFC (Throstle Nest)- 3pm koWed July 10: Slovenian XI (Fazanerija City Stadium) - 6:30pm ko (Local Time)Sat July 13: FC Domzale (Domzale Sports Park) - 7:45pm ko (Local Time)Tues July 16: Ferencvaros (Fazanerija City Stadium) - 6:30pm ko (Local Time)Sat July 20: Walsall (Banks's Stadium) - 3pm koTues July 23: Stevenage FC (The Lamex Stadium) - 7:45pm koSat July 27: FC Nurnberg (Elland Road) - 3pm ko