VFB Stuttgart are being linked with a move for Dynamo Kiev's Serbian international Milos Ninkovic.
The 26-year-old is reportedly looking to leave the Ukrainian outfit in January and is targeting a move to the Bundesliga.
He is contracted to Dynamo Kiev until June 2013, but it is believed that a fee of £1.25m could trigger the move.
The midfielder said: "VfB Stuttgart is a big club.
"Stuttgart is playing in Bundesliga 1 and Bundesliga is a very exciting competition. Therefore (moving to) Stuttgart is an attractive option."
Meanwhile, the German side have signed Japan Under 23 defender Gotoku Sakai on loan until the end of the season.
He signed from J-League club Albirex Niigata, with Stuttgart given the option to sign the player when his loan spell comes to an end.
Stuttgart general manager Fredi Bobic told the club's official website: "We are delighted to have signed Gotoku Sakai.
"He is an exciting prospect, he is equally strong with his left foot as he is with his right foot and I have rarely seen a player his age that has been suited in such an impressive way for the position of left-back as well as right back.
"We are glad about the deal that we worked out in his respect."