Redknapp told Sky Sports News: "We're just a little bit short at the moment and we need to strengthen the squad a little bit really. That's the problem.
"We've got two games in two nights and I've got Charlie as the only fit striker. We play tomorrow night at Southend and we haven't got anybody at the club who can play up front. It's ridiculous really.
"To be in this situation at this stage of the season, we really need to do something somewhere. We need to get Loic Remy back playing but he's not fit to play at the moment."
"We'll go to Southend and probably put a centre-half up front!"
1) Troy Deeney
All three promoted teams: QPR, Burnley and Leicester City have been linked with the Watford striker who was third in the Championship scoring charts last season with 24-goals.
Although with the 26-year-old's price tag set at £10 million, Burnley boss Sean Dyche has ruled them out of the running for the striker. Redknapp on the other hand has admitted he is interested in the Hornets man, but claimed he's not sure whether a deal will be done.
Deeney is also capable of playing on the wing, but his preferred role and the position where he scores all his goals is as a striker.
It would certainly be a risk paying such a huge fee for a player who has never played a single match in the Premier League, but this summer has shown us that players from the second tier are commanding much higher fees. You only have to look at Ross McCormack and Leo Ulloa to see this proven true.
2) Jermain Defoe
If QPR can get by until January then a loan move for Defoe could be a real possibility. The English striker is currently playing in the MLS with Toronto, and their season does not finish until late October.
Defoe is a born goalscorer and is proven Premier League class having scored 123 goals in his distinguished 14-year career. At 31-years-old Defoe is still playing a top level; he doesn't appear to have lost too much pace and still retains that lethal instinct in front of goal.
He is also a firm favourite of Harry Redknapp, who brought him through West Ham United's youth ranks and signed him when he was in charge of Portsmouth and Tottenham Hotspurs.
US based players often come to England on temporary loans when the MLS season finishes in order to keep up their fitness levels, so a loan for Defoe wouldn't be totally out of the question if QPR can reach an agreement with Toronto.
3) Gary Hooper
QPR missed out on signing Hooper last summer as he opted for a move to the Premier League with Norwich City. Now that both teams' fortunes have switched dramatically, it could be time for Redknapp to swoop for the ex-Celtic man again.
Hooper has shown he can score goals in the Premier League having notched 8 in 23 starts for the Canaries last season.
At just 26, the striker should be nearing his peak years as a professional, and reports are suggesting Norwich would be willing to accept just the £5 million they paid Celtic for his services last summer.
He would be a safer option than the likes of Deeney, who will cost a fortune, and Campbell who would only be a temporary solution to their lack of strikers.