Are the unseeded teams definitely away in the 2nd leg? Also, the UEFA website seems to indicate the 2nd matchday as 25 Feb - which is fixed, I would imagine, as 16-24 Feb are indicated as CL 1st leg dates.
Would be keen on a visit to
Definites:
Bucharest
Donetsk - not too sure though, as it is a hole by all accounts.
Probables:
Genoa
Tel Aviv
Bremen
Bilbao
Rome - maybe...
Don't forget that they'll be drawing the following round on the same day as well.