Monday 16 September 2013 11:52, UK
After a turbulent decade, their return to the Champions League following a long absence is a great story and they will be full of motivation.
Jagoba Arrasate's Spanish side like to play a passing game but are also not afraid to shoot from long range in order to avoid over playing.
Their non-aggressive make-up may mean they are a little bit lightweight against some of Europe's more experienced, powerhouse clubs.
