Think it must be Plessis actually, NGog's not travelled I don't think, he's expected to play in the reserve game at Man City tomorrow night that Agger's playing in.
Edit - yeah, here's the squad for the Fiorentina game: Reina, Cavalieri, Johnson, Skrtel, Carragher, Kyrgiakos, Aurelio, Insua, Lucas, Spearing, Plessis, Kuyt, Gerrard, Voronin, Torres, Babel, Riera, Benayoun.