Rafael Benitez is fretting over new injuries sustained by his Liverpool players in their 2-2 draw against Birmingham on Monday.

The Reds medical staff has only ten days to prepare the team for their next game against Manchester City and Benitez is understandably flustered at this moment of time.

"Both Yossi Benayoun and Albert Riera have muscle problems and will be out for three to four weeks. It depends on each player, but for Riera this is the second time with this injury," the Liverpool boss told liverpoolfc.tv.

"We will have to wait and see how they progress but hopefully in three weeks they could be available.

 "We are disappointed because there are too many things at the moment that we can't change. Both players are wingers as well and for them to be out at the same time is bad news for us.

"Daniel Agger felt something in his back after the Birmingham game and didn't go with Denmark after we spoke with their doctor and manager. I think he could be back training again in a few days.

"Glen Johnson's was a strange situation because he finished the game on Monday and then travelled to London to be with England. He felt something in his hamstring and came back to us for a scan. Hopefully it's not too serious and he could be available again in a week.

Benitez revealed that he was still unsure about Fernando Torres' health, but confirmed that Steven Gerrard was progressing well in his rehabilitation.

"With Fernando Torres we are talking about two or three weeks of treatment and working with the physios. I was talking with him this morning and he is doing well. Hopefully he can be running in a few days and we will see how he progresses," continued the Liverpool boss.

"It was good to have Steven Gerrard back on Monday night. He is feeling okay and should be training fully with the other players we have here in a few days.

"Sometimes a break comes at a bad time because you don't like to see your players flying all over the world, but this time it gives us a chance to get some players back."