Shaktar and Porto would be ideal, still a tricky game but would fancy us. Basel you could add to that although, and basing it on not having seen them play for 2 years, they are remarkable successful against English oppo beating us, Liverpool ad Chelsea it think.As things stand in the A-D groups, the second-placed teams will be Basel, Bayern, and Juve. I guess you'd want one from the other half - currently Sevilla, Shaktar and Porto.
All tricky though.
Bayern are now back under Heynckes, although they don't look quite as formidable as they did under Guardiola, by that I mean their forwards are old school, run in straight lines and there is little interchanging and movement, but still very quick.