The Citizens left Malta on Monday towards Budapest where they face the 30-times Hungarian champions in opening leg on Wednesday night.
Valletta are in high spirits after managing to overcome Luxembourgs F91 Dudelange in the first qualifying round on the away goals rule after that tie had ended in a 3-3 draw.
Ferencvaros will surely be tough opponents for Valletta, but the Citizens have shown great resilience against Dudelange, who had reach the Europa League group stages last season.
Should Dinamo Zagreb and Valletta both go through it would set up an intriguing tie between Maltese and Croatian teams this summer.
In fact last week, Gżira United knocked out Dinamos neighbouring rivals in the first qualifying round of the Europa League.
The third qualifying round matches of the Champions League are scheduled for August 6-7 and 13-14.
Champions Path Draw
Cluj/Maccabi vs Celtic/Kalju
Sutjeksa/Apoel vs Dundalk/Qarabag
PAOK vs Ajax...