Vorsah completes Red Bull Salzburg move
Isaac Vorsah during his presentation at Red Bull Salzburg
The 24-year-old joins from German side TSG Hoffenheim for an undisclosed fee after passing medical on Friday morning.
Red Bull Sporting Director Ralf Rangnick praised his new signing.
"I am pleased that we could sign two players in Rodnei and Vorsah who have already shown their class on an international stage and in top European leagues," Ragnick, who signed the centre-back in 2007 in the Bundesliga II side Hoffenheim, said
"They are at an ideal age for footballers and will boost our defence with their athleticism and speed."
Vorsah will join his new teammates after the international break after playing for Ghana against Malawi and Liberia.
He scored four times in 104 appearances for Hoffenheim.