Sheffield United claim they could receive up to £1.125million for Ade Akinbiyi after selling the striker back to Burnley.
The Clarets announced the £750,000 signing less than 12 hours into the January transfer window but the Blades have claimed they will receive a seven-figure sum depending on add-ons in the deal.
The 32-year-old rejoined the Clarets on a two-and-a-half-year contract less than 12 months after leaving Turf Moor for Bramall Lane in a club-record £1.75million transfer.
Burnley said the move was worth £650,000 with a further £100,000 payable in the summer after Akinbiyi put pen to paper today, though he was not eligible for the postponed match against Stoke .
United, though claim the striker 'returns to Burnley for a fee that could rise to £1.125million'.
Burnley manager Steve Cotterill said: 'I'm absolutely delighted to bring Ade back, as I'm sure the supporters and his team-mates will be - both those he left behind and the new ones he will meet.
'He is a great character. He will need time to settle in, though, because he hasn't played too much regular football in the last 12 months.'
Cotterill added: ' This is just the kind of lift we need at this moment - probably for Ade as well.
'We are looking forward to welcoming him back in the squad. We need to let him settle back into the club that loves him.'
It is understood that the structure of the deal also includes a conditional £250,000.
Half of that figure is payable subject to The Clarets achieving promotion to the Premiership with the other half dependent upon them staying in the top flight.
However, a Burnley spokesman would only confirm that the club had paid £750,000 for the striker.