The Austrian Bundesliga should provide valuable experience for the 20-year-old, who illustrated his potential with an outstanding display in our opening pre-season friendly, against Rosenborg in Norway.
Vitek made a string of fine saves before the home side scored a late winner in Trondheim as he continues to build his reputation.
The Czech Republic Under-20 international, who signed for the Reds in 2020 from Sigma Olomouc in his homeland, has risen through the Academy and shown his qualities.
He kept goal for the FA Youth Cup-winning team in 2022, performing well in the final against Nottingham Forest at Old Trafford, and has caught the attention of the Austrian club.