Liverpool manager Rafael Benitez has no new injury problems ahead of tomorrow's Champions League semi-final second leg at Chelsea but has yet to decide on his defensive line-up. With Fabio Aurelio out with a groin problem Benitez could install John Arne Riise - who scored the critical own goal as a substitute in the first leg 1-1 draw - at left-back. Benitez could also recall Sami Hyypia to centre-back, move Jamie Carragher to the right and switch Alvaro Arbeloa to the left while there could also be a place for Steve Finnan in either full-back spot. And Benitez must also decide whether to include in-form Peter Crouch up front in preference to Ryan Babel. Provisional squad: Reina, Carragher, Arbeloa, Hyypia, Skrtel, Riise, Finnan, Babel, Benayoun, Gerrard, Lucas, Alonso, Mascherano, Pennant, Crouch, Kuyt, Torres, Voronin, Itandje.