Speaking to the CT, the City manager said: "We have only got Freddy, Besty and Clinton really because we can't put too much pressure on Sean Jeffers so we need a little bit more strength in depth in that position.
"Of course we were looking to add, but it didn't happen, but we have still got plenty of time in terms of doing a loan deal up to Christmas, so I wouldn't rule anything out."
Scunthorpe United's Gary Hooper has been according to rumours suggested as another possible target.