Zulte-Waregem are definitely the ones that we would like. They got absolutely destroyed, twice, in the group stages. They lost 6-2 to Espanyol, which i think is a record defeat in the UEFA Cup, then they went on to lose 3-0 at home to Ajax. Next after that, i'd say Auxerre is one that we would like. A majorly average side - i mean, Rangers scored twice over on their patch, and they're seriously underachieving in Ligue 1. You could debate that Tel-Aviv would be the nicer opponent, but that's not really a trip i fancy.
Feyenoord the ones to avoid, definitely. Dangerous side.
But that's only as it stands at 21:09. The tables are decided in another half an hour or so. ;-)