Crystal Palace striker Steve Kabba impressed on a loan spell at Grimsby Town while Sunderland front man Kevin Kyle has struggled to breakthrough despite winning Scotland caps.
Warnock said: "I've made enquiries about them but that's all at the moment so we'll have to wait and see".
As well as Steve Kabba and Kevin Kyle it is rumoured that Sheffield United have shown a interest in Leicester City forward Trevor Benjamin.
The Foxes striker has yet to break into the first team and a short term move to Bramall Lane may be just what the doctor ordered.