IF its true that it will be 3 at the back in an away champions league opening match in which a draw is fine by me I would go:
Reina
Finnan Carra Aurelio
Sissoko Alonso
Pennant Gerrard Zenden
Bellamy Kuyt
I prefer Gonzo to Zenden in most cases but this is PSV away, so I think Zenden is more likely to step his game up. I would sub in Hyypia for Pennant and drop him to the back,move Gerrard to the right, and have momo and xabi play more forward like a traditional 4-4-2, unless we were losing, in which case I might try and put Crouch in for one of the strikers, or Garcia in for Pennant, bump Stevie to the right and have Garcia play a Centre Attacking Midfiled/ Centre Forward role, and put in Gonzo for Zenden to make the left side very pacey.