I don't think we should start with Frimpong tbh. We need to keep possession tonight, especially as it's an away game and we're playing a side who're very strong offensively. Frimpong's passing at the moment is not up to standard, and if we give the ball away frequently then expect Dortmund to spring us on the counter attack at will. Given the lack of options in midfield we don't have many choices, but I'd start with Benayoun as part of a midfield 3 with Arteta and Song.