Hull City are awaiting a response after making bids for Middlesbrough's Andrew Davies and Birmingham City's Rowan Vine.
The Championship club are keen to bring in the duo on loan, with a view to permanent deals in January.
Davies has made six appearances for Boro this season and Hull boss Phil Brown confirmed talks have taken place.
"We've spoken at length with Keith Lamb (Boro's chief executive) and Gareth Southgate, and we're awaiting a response from them," Brown told the Hull Daily Mail.
"We've done our business to the best of our ability and we're just awaiting an answer from Middlesbrough."
Vine has only featured in the Carling Cup since Birmingham's promotion to the Premier League and Brown hopes his lengthy pursuit of the striker will reap dividends.
He added: "Again with Rowan, I've had two or three conversations with Steve Bruce and he's been someone we've been keen on all summer.
"Unfortunately, now that it's out in the open, that might jeopardise the whole situation. But we will wait for an answer from Birmingham."
Hull are hoping to push through the loan deals in time for Saturday's Championship fixture against Crystal Palace.