Kicker reports that Wolfsburg are just one of several clubs interested in Union Berlin striker Kevin Behrens.
According to Sky Germany, the striker has signed his willingness to move, but the two clubs have yet to reach an agreement.
Sky puts the possible fee at €2.5-4 million, while Bild suggests it could be as high as €5 million.
However, Wolfsburg are apparently not the only suitors. According to Kicker, other clubs from Germany and abroad have also expressed interest, including MLS teams.
Should they fail to get a deal done for Behrens, Wolfsburg could turn their attention to Sevilla's Rafa Mir, having already rejected the possibility of signing Andrea Belotti from Roma, according to Kicker.