Wolfsburg has reacted to a slow start to its Bundesliga campaign by signing defenders Sotirios Kyrgiakos and Hrvoje Cale.

The club has conceded five goals in its last two matches, both of which ended in defeat, and has taken just three points from its first three Bundesliga matches.

Kyrgiakos, 32, joins Wolfsburg from Liverpool and has signed a two-year deal to keep him at the club until 2013. He will provide experience to a very young defensive unit during a rebuilding phase.

"Considering the lack of stability in our defense of late, it was necessary to do something in that area," said Wolfsburg general manager and head coach Felix Magath. "Kyrgiakos is a player who can immediately strengthen and help us. He is experienced, he knows the Bundesliga, he's up to the rhythm and will need no settling in time."

The former Greek international made 30 appearances for Liverpool, and could be available for selection in Wolfsburg's Saturday fixture against Freiburg.

Cale, 26, signed a two-year contract with Wolfsburg after departing from his most recent club, Turkish side Trabzonspor, by mutual consent. Prior to his stint in Turkey, the Croatian defender played for Dinamo Zagreb between 2006 and 2008.

"Wolfsburg is a very good club," Cale said. "I am very impressed by the structures and the organization. Playing here is a real chance for me and I am very proud."