Serbian tennis star, Slobodan Živojinović, and his wife, musician Lepa Brena, have listed their waterfront villa in Miami for $16.9 million.The former tennis ace previously claimed to have had a relationship with Princess Diana in the late 1980s while she was still married to Prince Charles.Živojinović, 59, revealed his relationship with Diana began when she watched him play at Wimbledon, after which they became “extremely close.” In a 2016 interview with the Serbian newspaper Kure, he explained Diana would watch him play tennis from the courtside stands rather than the VIP seats so she could be closer to him.“She was a wonderful woman. With her I could talk about everything and even simple things became fascinating,” Živojinović said in the interview.He is the only tennis player from Serbia to be the world No.