Subotic has not played a competitive match since he tore two ligaments in his right knee in November last year but claims he is ready to feature ahead of the start of the 2014-15 season.
The Serbian defender revealed on Friday that "it's all looking up" as Dortmund prepare for their final friendly of the close-season against Liverpool, before facing Bayern in Dortmund for the traditional curtain-raiser of the German football calendar.
"I'm doing well. Sometimes it doesn't respond quite as I'd like but I can train without any pain," Subotic told Ruhr Nachrichten.
"I don't think about it anymore and I can commit 100 per cent, which is the most important thing. So, generally, it's all looking up."
Subotic injured his knee in Dortmund's 2-1 loss at Wolfsburg last season but has played in five friendlies during the close-season, indicating he is ready for competitive action.
"It's going to be really difficult. This season, we've got four excellent centre-backs and the other three have played a lot more than me in the last year," Subotic said.
"Two [Hummels and Ginter] won the FIFA World Cup, one [Papastathopoulos] got to the last 16, and I wasn't even playing.
"Having said that, though, there are opportunities for everyone, and the coach will definitely give us all a fair chance. We'll have to wait and see."
