Barcelona welcome the Hungarian champions to the Camp Nou in midweek as their Champions League campaign gets underway.
The Blaugrana go into the game on the back of a disappointing defeat away to Getafe in La Liga, but will still be confident of extending their 36 game unbeaten run at home in Europe's elite cup competition.
Dynamo Kiev host Juventus in the other Group G fixture in what could shape up to be a very interesting group.
1. Goalkeeper & Defenders
Neto (GK) - Regular number one Marc-Andre ter Stegen has yet to feature so far this season due to injury so Neto will keep his place in goal.
Sergi Roberto (RB) - The 28-year-old La Masia graduate has established himself as Koeman's first-choice right-back and will likely retain his position in midweek.
Gerard Pique (CB) - Now a veteran at Camp Nou, Pique is still a guaranteed starter.
Clement Lenglet (CB) - Samuel Umtiti continues to suffer from ongoing knee issues, meaning compatriot Lenglet is likely to start against Ferencvarosi.
Junior Firpo (LB) - Jordi Alba is ruled out through injury, meaning former Real Betis full-back Junior Firpo could get his chance to shine after struggling since making the move to Catalunya last summer.
Frenkie de Jong (DM) - The Dutch international failed to find his best form throughout his debut campaign in Spain, but many hope the appointment of his former national coach and the change in formation will bring the best out of the 23-year-old.
Sergio Busquets (DM) - Like Pique, Busquets remains one of the first names on the team sheet for Barcelona, and he'll be hoping for at least one more Champions League triumph before he calls it a day.
Philippe Coutinho (CAM) - 17-year-old Pedri played through the middle at the weekend as Coutinho was rested. The Brazilian playmaker couldn't make the difference when he did enter the field just after the hour mark, but should feature from the beginning against Ferencvaros.
Antoine Griezmann (RW) - The Frenchman failed to fire Barca to victory over Getafe when starting up front, and could be played out wide once again on Tuesday.
Ansu Fati (LW) - Like Coutinho, Fati started on the sidelines last time out, a decision Koeman may now regret. The teenager is already a key player for Barça and is expected to return to the starting XI.
Lionel Messi (ST) - Koeman may be tempted to rest his star man with one eye on Saturday's Clasico, but Messi never likes to miss a match and will surely start through the middle in midweek.