Hannover have admitted they are interested in bringing Arsenal defender Johan Djourou to the club in the January tranfser window.
The 25-year-old has fallen out of favour with manager Arsene Wenger having only made two appearances for the Gunners this campaign.
The Switzerland international, who joined the club as a teenager, has yet to feature in the Premier League with Thomas Vermaelen, Laurent Koscielny and Per Mertesacker all ahead of him in the pecking order.
Now the former Birmingham City loanee could be set for a fresh start in the Bundesliga with Hannover chief Martin Kind admitting the club's interest in the player.
He told BILD newspaper: "I am able to confirm that we are very interested in bringing Johan Djourou to the AWD-Arena.
"He is on our short list of names and there have been some concrete talks with Arsenal going on."
Meanwhile, the club's general manager Jorg Schmadtke says any potential move for the centre-back would be a short-term deal as he is contracted to Arsenal until 2015.
He said: "We do intend to loan the player first until the end of the season and we will make a decision on his future."
The 22-year-old, who has scored nine goals in 16 games during a hugely successful loan spell with the Glovers, has agreed a two-and-a-half year contract and moves for an undisclosed fee.
"Obviously I am delighted to sign permanently at Yeovil Town," he told the club's official website. "I have really enjoyed my loan spell here and I am looking forward to scoring more goals for the club."
Manager Gary Johnson added: "I am very pleased that Paddy has joined us on a permanent contract. He has been fantastic for us since joining on loan and will add to the quality we already have in the squad.
"The directors, management, players and fans all wanted Paddy to stay with us and I am delighted to have secured his signature."
Madden's move was announced just hours after his double helped Yeovil record a 3-0 win over Leyton Orient at Huish Park.
The Irishman moved to Carlisle from Bohemians 12 months ago but made just eight starts for the Cumbrians before being loaned out to Somerset.
