This is from Universum's website:
Universum Box-Promotion would like to make a clear statement about comments recently made by WBO super welterweight world champion Sergej Dzinziruk and put the record straight.
Dietmar Poszwa, member of the Universum management: "There has been a court case between Universum and Sergej Dzinziruk in which the validity of his contract has been examined. The court ruled in Universum's favour. There have been reports that Sergej is a free agent but that is not true. According to the court ruling made by the district court in Hamburg on November 13 2009, he is still bound by contract exclusively with Universum. Additionally, Universum is, contrary to allegations made by Dzinziruk, not responsible that intended fights against Paul Williams and James Kirkland couldn't be realized. Those fights failed due to a lack of interest from the U.S. TV and the high purse demand of Dzinziruk."
"We would like to point out that as a result of the court ruling Sergej Dzinziruk has indicated his wish towards Universum to be released from the contract by buying himself out once he receives an offer from another promotor. We have agreed to this. If Sergej Dzinziruk has paid this money he will be free but at the moment there is no such offer.