By Kieran King Liverpool defender Sepp van den Berg has admitted he held talks with Ajax last summer over a potential move. The 22-year-old is currently out on loan at Bundesliga side Mainz and has played 18 matches so far this season, scoring one goal. Van den Berg spent last season on loan at Schalke, but was restricted to nine first-team appearances after suffering a serious ankle injury. Before his move to Mainz, there was competition for Van den Berg’s signature. In fact, the defender has revealed that he was in talks to sign for Ajax, who instead signed Gaston Avila and Josip Sutalo afte…