Midfielder Christoph Baumgartner will miss RB Leipzig’s pre-season camp in the United States after undergoing “a minor operation” on his right knee due to persistent problems, the Bundesliga club said on Saturday. “He will complete his rehabilitation in Leipzig and will therefore not travel to the USA,” Leipzig wrote on X. Leipzig will have a pre-season camp outside of Europe for the first time. They are to arrive in the US on Sunday and the return to Germany is set for August 4. They will be based in New Jersey, but will also travel to Miami for a few days. The trip includes friendly matches …