Manchester City striker Benjani Mwaruwari faces several weeks on the sidelines after picking up a hamstring injury in Saturday's 1-0 defeat to Everton.
The 30-year-old Zimbabwe international only returned to first-team action in November after missing the opening three months of the campaign with a thigh injury.
City boss Mark Hughes told the club's official website: "We're a little bit light on numbers at the moment.
"A number of the guys are carrying injuries, so that will have an impact, and that's difficult when you've got games coming up thick and fast. You have to have a fit and able squad.
"At the moment we're just struggling a little bit in that respect. We've lost Benjani again at the weekend with a hamstring and he'll probably be out for a number of weeks. We're a bit threadbare in fairness, but we'll see.
"Ideally we want more points on the board, that's a given, but what we have to do is make sure we pick up those points in the games that we have ahead of us.
"We're more than capable of doing that as we've proved this season. When we've played well people see we're a good side, but on occasions when teams frustrate us we haven't had the answers and Saturday was another case in point.
"The team on Saturday was very close to the one that beat Portsmouth 6-0, so we need to understand that when the team doesn't perform collectively or individually, then it's difficult to win games."